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The abscissas of point Pa n dQ on the cu...

The abscissas of point `Pa n dQ` on the curve `y=e^x+e^(-x)` such that tangents at `Pa n dQ` make `60^0` with the x-axis are. `1n((sqrt(3)+sqrt(7))/7)a n d1n((sqrt(3)+sqrt(5))/2)` `1n((sqrt(3)+sqrt(7))/2)` (c) `1n((sqrt(7)-sqrt(3))/2)` `+-1n((sqrt(3)+sqrt(7))/2)`

A

`ln((sqrt3+sqrt7)/(7))and ln((sqrt3+sqrt5)/(2))`

B

`((sqrt3+sqrt7)/(2))`

C

`ln((sqrt7-sqrt3)/(2))`

D

`+-ln((sqrt3+sqrt7)/(2))`

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The correct Answer is:
B
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