Why do the trig addition formulae work?
Try differentiating:sin(x)cos(z-x)+cos(x)sin(z-x)with respect to x and for constant z, then simply the derivative you deduce, then integrate throughout the simplified equation. See what happens!
Related Maths A Level answers
All answers ▸Simplify and solve for x. log(x+1)+log 5=2. Note, log is the natural log in this case
Take the polynomial p(x)=x^4+x^3+2x^2+4x-8, use the factor theorem to write p(x) as two linear factors and an irreducible quadratic. An irreducible quadratic is a quadratic that can not be factorised.
Using the factor theorem, factorise x^4 - 3x^3 - 3x^2 + 11x - 6
Given that x = ln(sec(2y)) find dy/dx