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Let f(x)=2x+2. solve f^-1(x) when x=4.
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Let f(x)=2x+2. solve f^-1(x) when x=4.

User RKrishna
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6 votes

Your answer is 1. Your welcome :)


User EccentricOrange
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f(x)=2x+2\\ y=2x+2\\ 2x=y-2\\ x=(1)/(2)y-1\\ f^(-1)(x)=(1)/(2)x-1\\ f^(-1)(4)=(1)/(2)\cdot4-1\\ f^(-1)(4)=2-1\\ f^(-1)(4)=1
User Nikitc
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