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anonymous
 4 years ago
if x and y are two real quantities, then show that the equation cosy= x + 1/x is impossible.
anonymous
 4 years ago
if x and y are two real quantities, then show that the equation cosy= x + 1/x is impossible.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Simply because 1<= cosx <=1

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x> any variable :) In your case,it's y

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1336390482629:dwdw:1336390511645:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Take LCM of x+ 1/x and you will see that cosy is always greater than 1

UnkleRhaukus
 4 years ago
Best ResponseYou've already chosen the best response.0what if both x and y are complex/

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so they can ne ver be equated
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