When does sin(2x) equal -1? Prove the identity cot(x) - tan(x) = 2cot(2x). How does 0 = cosx - sinx simplify to 1 - tan x? Solve:' tan^2 x/sec x + 1 = 1 - cos x/cos x. Solve: 1. tan^2 30 2. (sqrt{3}/3)^2 Solve for x if sin(x)cos(x) = 0. What ...
When does x equal if sec(x) = 3?If cos(x) + cos(y) = 1/3 and sin(x) + sin(y) = 1/4 then how much is sin(x + y)?\int 5 cos^{2}(x) sin(2x) dxShow that the following is true. cos(x - pi / 2) = sin xSolve for x: 2 \cos^2(x) = 13 \sinx - 5If ...
of reciprocityA.requires equal participation in a relationshipB.functions as a form of showing different statusC.shows an increasing amount of pressure on gift-givingD.is a form of communication between gift-givers andrecipientsWhat does the underlined word "reinitiated" in Paragraph 3 probably ...
y=sin(90∘)=1 Learn more about this topic: Trig Functions using the Unit Circle | Formula & Examples from Chapter 11/ Lesson 1 54K Learn about the unit circle in trigonometry. Understand the use of the unit circle to find the trigonometric functions. See how to find sine and co...
Use logarithmic differentiation to find frac{dy}{dx}: y =sqrt{frac{x^2-1}{x^2+1 How do you solve y=(lnx)cosx using logarithmic differentiation? When does e^x = ln x? Give an example of the use of logarithmic differentiation. Please choose an interesting example. Differentiate log base...
lim_x to 0 x^2 sin (1 / x) \lim_{x \to 0}\frac{\cos(x)\tan(x)}{\sin(x)}= A. -\infty B. \infty C. 0 D. 1 E. Does not exist Evaluate the limit by using L'Hopital's rule: a. limit of xsinx/1-cosx as x approa...
Let f (x) = Sigma_{n = 0}^infinity {(-1)^n 2^n x^n} / {n!}. Show that f' (x) + 2 f (x) = 0. How using the power rule for (-1)^n equal (-1)^{n+1}? Should it equal n(-1)^{n-1}? Find the funct...
For what values of x does the tangent line to the graph of the given function have slope 9? f(x): x^{3} -3x^{2} +1 What is the slope of the line tangent to the graph of y = tan^{-1} (-x) at x = -5? What is the slope of the lin...
By allowing the derivative of a function to be equal to zero, we are finding the points where the plot has local minima or maxima. Answer and Explanation: Determine the maximum of the function, P=xy, by first expressing the function only in terms of x. We do this by......
Prove that (A^{-1})^T = (A^T)^{-1}. If y= \frac{x + 1}{y}, prove that (x^2 - y^2 + 3)\frac{dy}{dx} = 1. How to prove \frac{sinx}{x} = 1? Prove that 1^2 + 2^2 + 3^2 + ... + n^2 = \frac{1}{6}n(n + 1)(2n...