Pembahasan Soal Matematika UN SMA/SMK – Akar, Pangkat, dan Logaritma #1

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Video tutorial berikut membahas penyelesaian Soal UN 2015 dari Bab Fungsi Komposisi dan Invers.

Diketahui \displaystyle f\left( x \right)={{x}^{2}}-4x+6 dan \displaystyle g\left( x \right)=2x+3. Fungsi komposisi \displaystyle \left( f\circ g \right)\left( x \right)=\ldots .

A. \displaystyle 2{{x}^{2}}-8x+12

B. \displaystyle 2{{x}^{2}}-8x+15

C. \displaystyle 4{{x}^{2}}+4x+3

D. \displaystyle 4{{x}^{2}}+4x+15

E. \displaystyle 4{{x}^{2}}+4x+27

(UN 2015)

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