One important question type to be able to answer is integrating squared trig functions. like cos^2(x)
This question requires selecting the correct double angle formulae.
cos(2x)=2cos^2(x)-1 is rearranged to 1/2(cos(2x)+1)
this can now be integrated with the students knowledge of standard integrals.
Cos integrates to sin and numbers integrate to x . Remembering the factor of 2 from the fact that its cos (2x) we get ;
1/4 (sin(2x)) +1/2 x
AR
Related Maths A Level answers
All answers ▸Solve the equation |3x + 4| = |3x - 11|
Functions: If f(x)=3x^2 - 4 and g(x) = x + 3, 1) Evaluate f(3), 2) Find the inverse of f(x) (f^-1(x)), 3)Find fg(x).
How do you integrate the term x^2?
Given that y=x^3 +2x^2, find dy/dx . Hence find the x-coordinates of the two points on the curve where the gradient is 4.