Find the derivative of sinx, use that to find the derivative of xsinx
the derivative of sinx is cosx, then we know that we can apply the product rule to find derivative of xsinx, such that if we let u=x and v=sinx and apply the formula d/dx(xsinx)=udv/dx+vdu/dx. to obtain xcosx+sinx.
NB
Related Maths A Level answers
All answers ▸Express (3 - sqrt(5))^2 in the form m + n*sqrt(5), where m and n are integers.
Find the turning point of the line y = -2x^2 +5x -9
Given an integral of a function parametrized with respect to an integer index n, prove a given recursive identity and use this to evaluate the integral for a specific value of n.
Show that cosec(2x) + cot(2x) = cot(x)