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kompoz [17]
3 years ago
15

Can someone explain how I do this

Mathematics
1 answer:
nadezda [96]3 years ago
5 0
What do you need me to explain
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If f(x) is 4x-3 what is (f^-1of) (10)
muminat
f(x)=4x-3\\
y=4x-3\\
4x=y+3\\
x=\frac{1}{4}y+\frac{3}{4}\\
f^{-1}(x)=\frac{1}{4}x+\frac{3}{4}\\\\
f^{-1} \circ f=\frac{1}{4}(4x-3)+\frac{3}{4}\\
f^{-1} \circ f=\frac{4x}{4}-\frac{3}{4}+\frac{3}{4}\\
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