A) \[{{f}_{2}}>f\] and \[{{f}_{1}}\] becomes negative
B) \[{{f}_{1}}\]and \[{{f}_{2}}\] both become negative
C) \[{{f}_{1}}={{f}_{2}}<f\]
D) \[{{f}_{1}}>f\] and \[{{f}_{2}}\]becomes negative
Correct Answer: D
Solution :
[d] ...(1) |
...(2) |
(3) |
From (1) |
From (2) |
From (3) |
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