Read about calculus 2 | 33 Discussions | Page 1

  1. A

    Troubles with an antiderivative

    please tell me if i am right or wrong
  2. Boltzman Oscillation

    Help explaining the chain rule please

    I had already calculated the first partial derivative to equal the following: $$\frac{\partial y}{\partial t} = \frac{\partial v}{\partial x} \frac{\partial x}{\partial t} + \frac{\partial v}{\partial t}$$ Now the second partial derivative I can use the chain rule to do and get to...
  3. Zack K

    Trapezoidal rule to estimate arc length error

    I got the first part of it down, $$L=\int_1^5 \sqrt{1+(\frac{1}{x^2})}dx$$ I just want to know if it's right to make your ##f(x)=\sqrt{1+\frac{1}{x^2}}## then compute it's second derivative and find it's max value, for the trapezoidal error formula.
  4. Zack K

    I Why can an infinite area have a finite volume or SA?

    I have a calculus 2 midterm coming up and given the exam review questions, this seems like this question can potentially be on it. I've tried to look it up, but I always find the famous painters example, which I don't find satisfying.
  5. S

    I How to apply the disk/washer and shell methods

    In Calculus II, we're learning about solids of revolutions and computing their volumes. I'm unsure when to apply the appropriate methods and how to make the correct partitions. Please tell me if my reasoning is correct: The disk/washer method is applied when your partitions are perpendicular...
  6. S

    Area of a bounded region using integration

    In Calculus II, we're currently learning how to find the area of a bounded region using integration. My professor wants us to solve a problem where we're given a graph of two arbitrary functions, f(x) and g(x) and their intersection points, labeled (a,b) and (c,d) with nothing else given. I...
  7. S

    Does the series 4/k(lnk)^2 converge or diverge?

    Homework Statement ##\sum_{k=0}^\infty \frac 4 k(\ln k)^2 ## Homework Equations The Attempt at a Solution I tried to solve it using the integral test but since it's not continuous it doesn't work.
  8. C

    Finding area enclosed by the polar curve

    Homework Statement Question attached in attachments Homework Equations Area enclosed by polar graph is ∫0.5r^2 where r is the radius as a function of angle theta The Attempt at a Solution I attempted to use the formula above and I subtracted the area of the inside from the outside but it...
  9. C

    Finding a the value of 30th derivative given power series.

    Homework Statement The problem is attached as pic Homework Equations ∑(ƒ^(n)(a)(x-a)^n)n! (This is the taylor series formula about point x = 3) The Attempt at a Solution So I realized that we should be looking at either the 30th,31st term of the series to determine the coefficient. After we...
  10. A

    Calc 2 Integration Area Problem

    Homework Statement Please help me solve the calc problem pictured! Homework Equations y=3-x^2 and y=x+1 The Attempt at a Solution My attempt is in one of the photos!
  11. A

    Finding the limits of integration and quadratic formula

    Homework Statement Please look at the photo! Homework Equations -x^2+4x=x^2-6x+5 The Attempt at a Solution I got 2x^2-10x+5 but it says it's wrong
  12. Draconifors

    Triple integral using cylindrical coordinates

    Homework Statement The first part of the question was to describe E the region within the sphere ##x^2 + y^2 + z^2 = 16## and above the paraboloid ##z=\frac{1}{6} (x^2+y^2)## using the three different coordinate systems. For cartesian, I found ##4* \int_{0}^{\sqrt{12}} \int_{0}^{12-x^2}...
  13. Rodrigo Schmidt

    Calculus Mathematically rigorous Calculus 2 book

    So, i am currently studying physics in a brazilian university. I am going to have a Calculus 2 course which, in Brazil, covers Ordinary Differential Equations and multi-variable differential calculus. So which challenging and rigourous books would you guys recommend for that? Thanks for the...
  14. B

    Need help finding the limit of a function

    Homework Statement Calculate limit as x approaches infinity of (e^x - x^3) Homework Equations ln e^x = x e^(ln x) = x The Attempt at a Solution I tried substituting x = ln e^x and got (e^x - (ln e^x)^3). I'm pretty much lost and this is my only attempt so far. I'm thinking that this is an...
  15. uchuu-man chi

    Need help evaluating an improper integral as a power series.

    Homework Statement Evaluate the indefinite integral as a power series. What is the radius of convergence (R)? ##\int x^2ln(1+x) \, dx## Book's answer: ##\int x^2ln(1+x) dx = C + \sum_{n=1}^\infty (-1)^n \frac {x^{n+3}} {n(n+3)}; R = 1## Homework Equations Geometric series ##\frac {1} {1-x} =...
  16. jlmccart03

    Show Wolfram Alpha's answer is equivalent to my answer.

    Homework Statement Integrate x2(2+x3)4dx. Show that Wolfram Alpha's answer is equivalent to your answer. Homework Equations No equations besides knowing that the integral of xpower is 1/power+1 * xpower + 1 The Attempt at a Solution So I have the answer to the integral by hand as (2+x3)5)/15...
  17. I

    Work problem -- lifting water out of tanks

    < Mentor Note -- thread moved to HH from the technical math forums, so no HH Template is shown > I've encountered 2 problems in a row that involve lifting water out of tanks and finding the work needed. I am getting the incorrect answer. w = ⌠ab pgA(y)D(y)dy here is one of the problems: A...
  18. I

    I Work Problem

    "It takes 100J of work to stretch a spring 0.5m from its equilibrium position. How much work is needed to stretch it an additional 0.75m." Attempt: w = ⌠abF(x)dx work = F x D 100J = F x 0.5m F = 200J 0.75 + 0.5 = 1.25 w = ⌠0.51.25 200dx w = 150 J The correct answer: w = 525 J what did I do...
  19. Alexstrasza

    Stuck on this integral

    Homework Statement I have a linear integral (e^xsiny-2)dx + (e^xcosy+x^2)dy y≥0 2x=x^2+y^2 I used Green's theorem and got: ∬ (e^xcosy+2x) - (e^xcosy) dy dx x bounds: from 0 to 2 y bounds: from 0 to sqrt(2x-x^2) After solving all that stuff I get to: ∫ (2x) (sqrt(2x-x^2)) dx x bounds: 0 to...
  20. Alexstrasza

    For the life of me I can't solve this integral sqrt(1-x^3)

    Homework Statement Hi, I have a double integral with square root of 1-x^3 that I can't solve. Here is the integral and attempt at the solution. I get stuck! Homework Equations I am in Calc II. Mostly we used integration by parts, or substituting t=something for most "difficult" integrals...
  21. maxhersch

    I Find the formula to express the infinite series...

    The problem is to find the general term ##a_n## (not the partial sum) of the infinite series with a starting point n=1 $$a_n = \frac {8} {1^2 + 1} + \frac {1} {2^2 + 1} + \frac {8} {3^2 + 1} + \frac {1} {4^2 + 1} + \text {...}$$ The denominator is easy, just ##n^2 + 1## but I can't think of...
  22. Jianphys17

    I Lebesgue measure and Fourier theory

    Hi everyone, in this days i was seeing a little of Fourier series and transform, and i wondered if it was necessary to better understand before the measure and Lebesgue integral before studying it. Or it's not necessary?
  23. LadyAkatosh

    Courses Calculus 2 Online Course Required

    Hey everyone! I started back at my university after a 3 & 1/2 year break and changed my major from Journalism to Physics last May. I am coming up on my finals in a couple of weeks for the Spring Semester and then I will be taking a class over the summer and doing research. My grades are great...
  24. deagledoubleg

    Find Taylor Series from a function and its interval of convergence

    Let f(x) = (1+x)-4 Find the Taylor Series of f centered at x=1 and its interval of convergence. \sum_{n=0}^\infty f^n(c)\frac{(x-c)^n}{n!} is general Taylor series form My attempt I found the first 4 derivatives of f(x) and their values at fn(1). Yet from here I do not know how to find the...
  25. Jess Karakov

    Sequence Convergence/Divergence Question

    Homework Statement Determine which of the sequences converge or diverge. Find the limit of the convergent sequences. 1) {asubn}= [((n^2) + (-1)^n)] / [(4n^2)] Homework Equations [/B] a1=first term, a2=second term...an= nth term The Attempt at a Solution a) So I found the first couple of...
  26. gsmtiger18

    Limits of sequences involving factorial statements!

    Homework Statement I have to determine whether or not the following sequence is convergent, and if it is convergent, I have to find the limit. an = (-2)n / (n!) In solving this problem, I am not allowed to use any form or variation of the Ratio Test. 2. The attempt at a solution I was...
  27. Jianphys17

    A good text for analysis 2

    Hi at all, what is the better book for study analysis 2, if possible also with exercises...
  28. mudweez0009

    Mass Balance of tank

    I'll be using a mass balance calc for a tank design at work. We are designing a tank that has an automatic float switch on it, attached to a valve which will start filling the tank when the water level drops below a certain point. This tank is intended to drain quickly (flow rate not known at...
  29. E

    Calculus BC is 2 months

    Hello I am currently a sophomore in high school and am looking to graduate early next year. I need to take 4 additional classes this summer at my local community college in order to satisfy all the courses I need in order to graduate early. To give my self a boost I was looking in to taking the...
  30. R

    Calculus II tips

    Hey there, I will be taking calculus 2 this spring semester and I would like to know what topics from calc 1 I should be reviewing, I did receive a B+. I am also aware that trig is highly involved and my trig skills are not that good, so if there's anything from trig that is mandatory to review...
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