## News

### lim t→0 8 t − 8 t2 + t

October 25, 2020

X Approaches Infinity! Dividing all terms by the highest power, $t^2$, is absolutely the right move. The first term of the nominator and that of the denominator go to zero if t goes to the infinity. Surely the number can be a very high positive number also? I guess my question is if someone can explain why $\lim\limits_{x \to \infty} \cfrac{C}{x^n}=0/$ since if I put in a small x number such as .0001 I will get a large output number (y value). Is'nt this the process I should be taking to break down a limit expression. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. $$=0 + \lim_{t \to \infty} \dfrac {t}{(4 - t)}$$ The expression you are given is:$$\lim_{t\to\infty}\frac{\sqrt{t}+t^2}{4t-t^2}\tag{1}$$What we do here is divide the numerator and the denominator of this expression by $t^2$. I don't understand what you have said I have done wrong. In the below equation I am lost after step 2? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Are there such logs? Asking for help, clarification, or responding to other answers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It only takes a minute to sign up. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Now evaluating this expression as t approaches infinity is easy, as long as you are okay with $\lim\limits_{x \to \infty} \cfrac{C}{x^n}=0$, C and n can be any positive real number! Thanks for contributing an answer to Mathematics Stack Exchange! evaluate the limit as x approaches O using l'hopital s rule. I need clarity. for example why is the limit as x approached infinity $1/x = o$? Australia–ASEAN Power Link - why not build the solar farm near Singapore? Would like some feedback on my process. Why can quadratic functions over polyhedrons be minimized exactly in finite time? $$=\lim_{t \to \infty} \dfrac{1}{\sqrt t(4 - t)} + \lim_{t \to \infty} \dfrac {t^{3/2}}{\sqrt t(4 - t)}$$ Informations sur votre appareil et sur votre connexion Internet, y compris votre adresse IP, Navigation et recherche lors de l’utilisation des sites Web et applications Verizon Media. 0. Is there anything preventing a wizard from using a staff of healing? You have taught someone today. Why is every electron in the universe not entangled with every other electron? I have had a tutor. To learn more, see our tips on writing great answers. You also had a mistake cancelling out your exponents - for example, the numerator in the upper-right corner should have reduced to $1/t^{3/2} + 1$. Making statements based on opinion; back them up with references or personal experience. Also, would like to gain a Calculus I understanding of limits. Evaluate $\lim_{t \to \infty} \frac{(\sqrt t+ t^2)}{(4t - t^2)}$. Now evaluating this expression as t approaches infinity is easy, as long as you are okay with $\lim\limits_{x \to \infty} \cfrac{C}{x^n}=0$, C and n can be any positive real number! When x=100000, the expression evaluates to about 1.6. If you consider a finite number for x, you will always get a finite value for the expression. Tension between "publishable" and "motivating" research topics, Atiyah-Singer for Riemannian and Kaehler manifolds. $\lim_{x\to\infty}\frac{1}{x}=0$ can be seen by looking at values of $x$ that get bigger and bigger: $\frac{1}{1}=1, \frac{1}{10}=0.1, \frac{1}{100}=0.001$ and so on. When x=10000, the expression evaluates to 5. I was referring to the part on the left of the second line where you wrote that the limit of (4-1)/t was equal to the limit of 4/t minus the limit of 1. $$=\lim_{T \to 0} \dfrac {1/T}{4-1/T},\; \text {with} \;T=1/t$$ By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. (You actually had the correct answer, but you got a bit lucky since you had errors along the way. Do you follow the limit laws if "the number x is approaching" is not in the domain? "the denominator, you also have to distribute 1/t, not put it on only one of the two terms in the numerator." rev 2020.10.26.37891, The best answers are voted up and rise to the top, Mathematics Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. A question many are having a problem explaining to me is why is the limit as x approaches infinity designated as zero. How plausible would a self-aware, conscious viral life-form be? Pour autoriser Verizon Media et nos partenaires à traiter vos données personnelles, sélectionnez 'J'accepte' ou 'Gérer les paramètres' pour obtenir plus d’informations et pour gérer vos choix. Am I HSA qualified if I am covered on two health plans, one of which is not high deductible? Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Since the number is infinity, what does that mean? Can humming a bar of music considered as copyright infringement? Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. What does that Mean ? $$=\lim_{T \to 0} \dfrac {1}{4T-1}$$ After that, in the denominator, you also have to distribute 1/t, not put it on only one of the two terms in the numerator. Excellent presentation. Perhaps it would be better to separate them into individual thoughts? Is the audio in mp3 and video files the same? MathJax reference. Thats is, when I get to the point of solving a limit expression or function, why is it as x approaches infinity the value is designated zero? Are generators defined in Tohoku paper equivalent to that defined in Wikipedia (Which I believe is a more widely used definition), Why is my Sieve of Eratosthenes using generators so slow. How to turn off horizontal split screen on iOS 14 on an iPhone? Asking for help, clarification, or responding to other answers. I would like to get am intuitive answer or I guess you can also just tell me to accept it as an axiom. Why does the definition of limits of a function have strict inequality? Yahoo fait partie de Verizon Media. If you look at just the numerator and divide it by $t^2$ you get:$$\frac{\sqrt{t}+t^2}{t^2}=\frac{\sqrt{t}}{t^2}+\frac{t^2}{t^2}=\frac{1}{t^{3/2}}+1\tag{2}$$Similarly, if you look at just the denominator and divide it by $t^2$ you get:$$\frac{4t-t^2}{t^2}=\frac{4t}{t^2}-\frac{t^2}{t^2}=\frac{4}{t}-1\tag{3}$$If we now substitute (2) and (3) into (1) we get:$$\lim_{t\to\infty}\frac{\sqrt{t}+t^2}{4t-t^2}=\lim_{t\to\infty}\frac{\frac{\sqrt{t}+t^2}{t^2}}{\frac{4t-t^2}{t^2}}=\lim_{t\to\infty}\frac{\frac{1}{t^{3/2}}+1}{\frac{4}{t}-1}$$Hopefully you understand the rest of the steps. To learn more, see our tips on writing great answers. If so, then you didn't do anything wrong - sorry. If u(0)/v(0) is indeterminate, then lim(t→0) u(t)/v(t) = lim(t→0) u'(t)/v'(t) Assuming a set of parentheses was omitted and the function should be (8^t-5^t)/t When x=1000000, the expression evaluates to 0.5. x=10000000, the expression evaluates to about 0.16. This is because the exponents are greater then one. If you'd like an explanation of this, I suggest asking a separate question. What if x is 0.0001? Thanks for contributing an answer to Mathematics Stack Exchange! If the limits on f and g both exist then the limit of f/g is the quotient of the limits, it's totally OK... @lolopop I know, but that fact is something that would be beneficial to Cetshwayo for solving problems in general. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. You can continue this process. 2,882 8 8 gold badges 37 37 silver badges 66 66 bronze badges $\endgroup$ $\begingroup$ The first term of the nominator and that of the denominator go to zero if t goes to the infinity. MathJax reference. How can a natural process create a near-perfect geometric shape as the most prominent feature of a planet? What's the deal with Bilbo being some kind of "burglar"? Am I HSA qualified if I am covered on two health plans, one of which is not high deductible? Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. Why is the Economist model so sure Trump is going to lose compared to other models? How feasible and capable is a preindustrial land yacht? $$=-1$$. Did you mean to write t, not 1, in the numerator? Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. Leaving you with: $\cfrac{\cfrac{1}{t^{3/2}}+1}{\cfrac{4}{t}-1}$. (in bytes), Lagrangian of a free particle in Special Relativity and equivalence between mass and energy, Word for the flavor found in green bananas or green persimmon. Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Or am I missing something here? $$\lim_{t \to \infty} \dfrac{(\sqrt t+ t^2)}{(4t - t^2)}$$ rev 2020.10.26.37891, The best answers are voted up and rise to the top, Mathematics Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Tension between "publishable" and "motivating" research topics. Do you get advantage on the Steel Wind Strike spell's attacks because you "vanish"? @Cetshwayo You did get back to that in the end. He cannot convince me how one should solve limit approaching infinity problems. Is it possible to somehow understand from the logs what happened to the phone a month ago? Does the scrum master also estimate user stories? lim t → ∞ [(t^1/2) + t2] / 4t − t2 What should be my Strategy at Solving these types of problems. We know that the $$\lim_{t\to\infty}\frac{1}{t}=0$$So the idea is to get terms in this form. Use MathJax to format equations. It appears that you have several questions here. Why can't I. I divided the entire rational complex polynomial by the highest power x^2 in the denominator. See the answer lim t→−8 t 2 − 64 2t 2 + 17t + 8 Expert Answer Previous question Next question Get more help from Chegg Get 1:1 … Company just prohibited Scrum swarming pattern for developers. Making statements based on opinion; back them up with references or personal experience. Limit approaches infinity on one side and negative infinity on other side, Differentiability of piecewise function using the definition analytically, Find the limit, if the limit exists: $\lim_{x\to−\infty} \sqrt{ 4x^6 − x}/( x^3 + 2)$, Trying to understand the following proof of $f(x) = a^x \implies f'(x) = a^x \ln a$. Nos partenaires et nous-mêmes stockerons et/ou utiliserons des informations concernant votre appareil, par l’intermédiaire de cookies et de technologies similaires, afin d’afficher des annonces et des contenus personnalisés, de mesurer les audiences et les contenus, d’obtenir des informations sur les audiences et à des fins de développement de produit.