Question

if f(x+1)=3x+1 find the value f(2x)​

Answer 1

Answer:

(x+1)=3x+1

x+1=3x+1

2x=0

x=0

putting x=0 in the equation

2x

2(0)

0

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Answer 2

Answer:

let X=a-1 ,then f(a)=3a-2

now take a=2x

then f(2x)=6x-2