Determine the first derivative of the following function:
y=2ax+a3x+14a-x
y'=2axlna+3a3xlna-14a-xlna
y'=ln a 2ax+3a3x-14a-x
y'=ln a 2ax+3a3x-14ax
y=anx ; y'=n·anx·ln a
y=C·fx ; y'=C·f'x