Math, asked by tasneem8028, 8 months ago

IF f:R -R ,given by f(x) =(5-x^5(^1/5,then fof is

Answers

Answered by 217him217
8

Answer:

fof(x) = f(f(x)) = f( (5-x^5)^1/5)

= (5 - ((5-x^5)^1/5)^5 )^1/5

= (5-5+x^5)^1/5)

= (x^5)^1/5

= x

Answered by talasilavijaya
1

Answer:

If f(x) =(5-x^{5})^{1/5} then fof(x)=x

Step-by-step explanation:

Given f(x) =(5-x^{5})^{1/5}

                           fof(x)=f\big(f(x)\big)

                                       =f\big((5-x^{5})^{1/5}\big)

                                       =\Big[5-\big((5-x^{5})^{1/5}\big)^{5}\Big]^{1/5}

                                       =\Big[5-(5-x^{5})\Big]^{1/5}

                                       =\Big[5-5+x^{5})\Big]^{1/5}

                                       =\big(x^{5}\big)^{1/5}

                                       =x

Therefore, fof(x)=x

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