If lambda "and" mu are the cofactors of ...

If `lambda "and" mu` are the cofactors of 3 and -2 respectively in the determinant `|{:(1,0,-2),(3,-1,2),(4,5,6):}|` the value of `lambda+mu` is

A

5

B

7

C

9

D

11

Text Solution

Verified by Experts

The correct Answer is:

C

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If the plane 2x-y+2z+3=0 has the distances (1)/(3) and (2)/(3) units from the planes 4x-2y+4z+lambda=0 and 2x-y+2z+mu=0 , respectively, then the maximum value of lambda+mu is equal to

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In the figure shown mu_(1), mu_(2), mu_(3), mu_(4) and mu_(5) are the refractive indices of the mediums 1,2,3,4 and 5 respectively . Consider the following (1) mu_(1) = mu_(2) (2) mu_(3) = mu_(4) = mu_(5) mu _(2) lt mu_(3) (4) mu_(4) gt mu_(5)

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C

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D

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