C3 differentiation dervived Watch
For C3 edexcel, do we have to learn how to derive the differential of sec, cot and cosec ?? Will be asked to dervive these in the exam?
for example sec x = 1 / cos x
let u = 1 and v = cos x
so use d(u/v)/dx = ( v (du/dx) - u (dv/dx)) / (v^2)