PROBLEM SOLVING - tempat bertanya PR Kaskuser (SD, SMP, SMA) - Part 3
turunkan thd x ? f(x)= 5 . sin X + 6 . cos x df(x)/dx = 5cosx - 6sinx / f(x)= sin x / 1 + cos x misalkan, u = sinx v = 1 + cosx df(x)/dx = u'v -uv' / v^2 = / (1+cosx)^2 = (cosx + cos^2x + sin^2x) / (1+cosx)^2 = (cosx + 1) / (1+cosx)^2 = 1/(cosx + 1) / f(x)= 2 sin x + 4 cos x - x df(x)/dx = 2cos...