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manojbalaji1
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if x and y are two real quantities, then show that the equation cosy= x + 1/x is impossible.
 2 years ago
 2 years ago
manojbalaji1 Group Title
if x and y are two real quantities, then show that the equation cosy= x + 1/x is impossible.
 2 years ago
 2 years ago

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shivam_bhalla Group TitleBest ResponseYou've already chosen the best response.3
Simply because 1<= cosx <=1
 2 years ago

shivam_bhalla Group TitleBest ResponseYou've already chosen the best response.3
x> any variable :) In your case,it's y
 2 years ago

kevinkeegan Group TitleBest ResponseYou've already chosen the best response.0
dw:1336390482629:dwdw:1336390511645:dw
 2 years ago

shivam_bhalla Group TitleBest ResponseYou've already chosen the best response.3
Take LCM of x+ 1/x and you will see that cosy is always greater than 1
 2 years ago

shivam_bhalla Group TitleBest ResponseYou've already chosen the best response.3
or lesser than 1
 2 years ago

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

him1618 Group TitleBest ResponseYou've already chosen the best response.0
ull get x+ 1/x > 2
 2 years ago

him1618 Group TitleBest ResponseYou've already chosen the best response.0
and cos y <=1
 2 years ago

him1618 Group TitleBest ResponseYou've already chosen the best response.0
so they can ne ver be equated
 2 years ago
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