What is the integral of (cos(x))^2?
cos(2x) = 2cos2(x)-1 by the double angle formula.
Rearrange to give cos2(x) = (cos(2x)+1)/2
Integrating this gives sin(2x)/4 + 1/4x + c
MC
Related Maths A Level answers
All answers ▸A curve has equation y = (12x^1/2)-x^3/2
A curve, C, has equation y =(2x-3)^5. A point, P, lies on C at (w,-32). Find the value of w and the equation of the tangent of C at point, P in the form y =mx+c.
How do we differentiate y = arctan(x)?
A circle C with centre at the point (2, –1) passes through the point A at (4, –5). Find an equation for the circle C.