state the inverse of x given f(x)=x-5/x+4
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2 Answers

?????????????????? "invers av x" ????????????

yu want y???????????????

y=x-(5/x)+4

y=(x^2 +4x-5)/x

quadratik equashun giv y=(x-1)*(x+5)
by

f(x)=x-5/x+4

y=x-5/x+4

Interchange y to x and x to y

x=y-5/y+4

y=1/2(±√(x^2-8x+36)+x-4)

Hence f'(x)=1/2(±√(x^2-8x+36)+x-4)


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