Diketahui (f°g)(x)=12x-20, tentukan nilai dari (f°g)-¹(2)=​

Diketahui (f°g)(x)=12x-20, tentukan nilai dari (f°g)-¹(2)=​

Jawab:

(fog)(x) = 12x – 20

y = 12x – 20

y + 20 = 12x

x = (y + 20) / 12

maka

(fog)⁻¹(x) = (x + 20)/12

 

– menentukan nilai (fog)⁻¹(2)

(fog)⁻¹(x) = (x + 20)/12

(fog)⁻¹(2) = (2 + 20)/12

= 22/12

= 11/6

= 1 5/6

 

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