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## Homework Statement

Calculus Derivative help?

when x = 0, f=2, f '=1, g=5, g '= -4

when x = 1, f=3, f '=2, g=3, g '= -3

when x = 2, f=5, f '=3, g=1, g '= -2

when x = 3, f=10, f '=4, g=0, g '= -1

based on the above table, if a = f +2g, then a'(3) =?

please show steps.thanks

## Homework Equations

if a = f +2g, then a'(3) =?

## The Attempt at a Solution

a=f'+0(g')

a'(3)=f'3+0

a'(3)=4????