Differentiate cos^2(x)
Using the chain rule, Let y=cos2(x)Let u=cos(x)y=u2dy/du=2udu/dx=-sin(x)dy/dx=dy/du*du/dx=-2sin(x)cos(x)
MB
Related Maths A Level answers
All answers ▸A curve has the equation: x^3 - x - y^3 - 20 = 0. Find dy/dx in terms of x and y.
Express x^2+3x+2 in the form (x+p)^2+q, where p and q are rational numbers.
Integrate | x^7 (ln x)^2 dx ( | used in place of sigma throughout question)
Why does ln(x) differentiate to 1/x ?