Pertanyaan

· Diketahui fungsi f : R -> R ditentukan oleh f(x) = 2x + 5. Tentukan rumus fungsi inversnya!

$f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x minus 8 over denominator 2 end fraction$
$f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x plus 5 over denominator 2 end fraction$
$f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x plus 8 over denominator 2 end fraction$
$f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x minus 12 over denominator 2 end fraction$
$f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x minus 5 over denominator 2 end fraction$

D. Kamilia

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

Pembahasan

$f left parenthesis x right parenthesis equals y 2 x plus 5 equals y 2 x equals y minus 5 x equals fraction numerator y minus 5 over denominator 2 end fraction f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator y minus 5 over denominator 2 end fraction f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x minus 5 over denominator 2 end fraction J a d i comma space f u n g s i space i n v e r s n y a space a d a l a h space f to the power of negative 1 end exponent left parenthesis y right parenthesis equals fraction numerator x minus 5 over denominator 2 end fraction$