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Sir, how to solve the question in the attachment? Ans: a> 1

Sir, how to solve the question in the attachment? 
Ans: a> 1

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1 Answers

Umakant biswal
5349 Points
7 years ago
@ aditya 
i am giving the apporoach to solve this question 
here we nned to take quadratic equation in b means a as constant.
so that quadratic equation should take ionly positive values.
means its discriminant is less than zero.
then we get relation for a.
so, by calculating the discriminent we get 
a^2-2ab+b^2 - 4+4a+4b
so, here the value will always be greater than 0 and l;ess than 1 . 
try to find out the vcalue of a from that . 
HOPE U CAN DO IT NOW 
ALL THE BEST ..

 

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