integrate (4cos^4 x -4cos^2x+1)^1/2
we must integrate (4cos4 x-4cos2 x+1)1/2 factorise first ((2cos2x-1)2)1/2this becomes (2cos2x-1)which equals cos 2xthe integral of cos 2x is1/2 sin 2x + C
DW
Related Maths A Level answers
All answers ▸Calculate the gradient of the function y=x^2+6x when y=-9
The mass of a substance is increasing exponentially. Initially its mass is 37.5g, 5 months later its mass is 52g. What is its mass 9 months after the initial value to 2 d.p?
Differentiate xcos(x) with respect to x.
The curve C has equation x^2 – 3xy – 4y^2 + 64 = 0; find dy/dx in terms of x and y, and thus find the coordinates of the points on C where dy/dx = 0