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Grade: 11 

                        
g(x)=x-1/x f(g(x))=x^3-1/x^3 then prove that f(x)=3x^2+3
8 years ago

Answers : (1)

pankaj dave
18 Points 
							
f(g(x))=(x-1/x)3+3(x.1/x)(x-1/x)


 f(y)  =y3+3y        y=x-1/x
8 years ago
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