Let . Prove that s^ -1 ! (s(s^ -1 (s(y))) )=y for every real number…

MATHEMATICS · Subjective · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let

s(x)=\dfrac{2x+3}{5}

. Prove that

s^{-1}\!\bigl(s(s^{-1}(s(y)))\bigr)=y

for every real number

y

.

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