i) fRR given as fx) 3x+7, for all xeR – InterviewSolution

1.

i) fRR given as fx) 3x+7, for all xeR

Answer»

let x and y belongs R

f(x) = f(y)

3x + 7 = 3y + 7

x = y

So, one - one

f(x) = 3x + 7 = y

x =( y - 7)/3

f inverse (x) = (x-7)/3

So, onto

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