Find the derivative of the following functions (it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers):
sin (x+a)
Let f(x) = sin (x + a), accordingly f(x + h) = sin (x + h + a)
By first principle,
=
=
=
=
= cos (x + a)