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CHUMKY JANA

· started a discussion

· 1 Months ago

solusion (Question: 108201.0 )

(x+1/x)/2=A
=>X+1/X=2A

NOW WE HAVE TO FIND
(X^3+I/X^3)/2=[((X+1/X)^3-3X.I/X.(X-I/X))/2 ] [PUTTING THE VALUE OF X+I/X IN THIS EXPRESSN AND FIND ANSWER

Question:

If the average of two numbers \(x\) and \(\cfrac{1}{x}\) (where \(x\)\(\neq\)0) is A, then what will be the average of \(x^3\) and \(\cfrac{1}{x^3}\)?

Options:
A) 4A3 – A
B) 4A3 – 2A
C) 4A3 – 3A
D) 4A3 – 4A
Solution:
Ans: (c)


Knowledge Expert

· commented

· 1 Months ago

Dear student
Given answer is correct,
Please try again

Best wishes
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