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If a,b,c are in H.P., then the expressio...

If a,b,c are in H.P., then the expression E=`(1/b+1/c-1/c)(1/c+1/a-1/b)` equals

A

`(2)/(bc)-(1)/(b^(2))`

B

`(1)/(4)((3)/(c^(2))+(2)/(ca)-(1)/(a^(2)))`

C

`(3)/(b^(2))-(2)/(ab)`

D

none of these

Text Solution

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The correct Answer is:
A, B, C, D
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