# Föreläsningsanteckningar - Wehlou

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g(x) = 1. 2 sin(π - 2x) + 3. 2. Solution. 1. example. Calculus: Fundamental Theorem of Calculus 2016-12-18 · To find the equation of the tangent line to the curve y = cos(2x) at x = π 4, start by taking the derivative of y (use the chain rule). y' = − 2sin(2x) Now plug in your value for x into y': −2sin(2 ⋅ π 4) = − 2 I dont know how to type cos^2(x)- sin^2(x) into matlab. I think it is cos(x).^2 - sin(x).^2. Also I know the interval is typed out [-2*pi, 2*pi} but I dont understand what the question means by saying using 100 points in the domain For the function y = 2 cos ( x ) , the graph has an amplitude 2 .

## Föreläsningsanteckningar - Wehlou

period = 2pi/B For y = cos 2x A = 1, B = 2 (1). amplitude = |A| = 1 (2).

### Paritet Redinciial Trig av deras funktioner. Trigonometriska In this Chapter, we will generalize the concept and Cos 2X formula of one such trigonometric ratios namely cos 2X with other trigonometric ratios. > How is the graph of $\cos x^2$? (i) Sketch, on the same diagram, the graphs of y = sinx and y = cos 2x for 0◦ ≤ x ≤ 180◦. . (ii) Verify that x = 30◦ is a root of the equation sinx = cos 2x, and  Sal graphs y=-2.5*cos(1/3*x) by considering it as a vertical stretch and reflection, and a horizontal stretch, of y=cos(x). cos(2x-pi/3) = cos(2(x-pi/6)).
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Example 10. My problem is that it graphs cos(2x) instead of cos(x), similarly it graphs ln(2x) instead of ln(x) and so on. I have checked the factorials and they appear to be correct. What could be the problem, have I messed up the series or have I made a Matlab mistake?

2. cos. 2. (x) = 1 + cos(2x). 2.. tan(x) dx = ln | sec(x)| + C.. sec(x) dx = ln | sec(x) + tan(x)| + C. Lösa trigonometriska ekvationer: t.ex. cos 2x - sin 2x = 2 sin2x.
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https://math.stackexchange.com/questions/110386/number-of-solutions-of-3-cos2x-cosx-2-0. Let y=\cos (x). Then the equation becomes 3y^2 + y - 2 = 0. This can be solved using the quadratic formula or any other method for solving quadratics.

y = cos 2 x − 2.
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