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tapish khari Grade: 12
        

 

 



 Q1 FIND OUT FOR WHAT INTEGRAL VALUES OF N THE NUMBER VALUES OF N THE NUMBER 3 IS A PERIOD OF THE FUNCTION ; f(x)= COSNX.SIN(5/X)


Q2 FIND THE INVERSE OF f(x) = 2LOGX+8. &HENCE SOLVE THE EQUATION f(x)= f -1(x)

7 years ago

Answers : (1)

mounika gajawada
31 Points
										

i'm unable to understand ur first ques.......plz post it properly


 


ans for Q2 is x=10


let 2logx+8=y


→ logx=log(y-8)/log2


→ x=10{log(y-8)/log2}


→ f-1(x) = 10{log(y-8)/log2}


f(x)=f-1(x) only wen y=x


→ x= 2logx +8 


→ x=10

6 years ago
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