Q4 The number of real solution of t...
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Q4 The number of real solution of the equation = -3 + x - x? is- (A) 1 (C) 0 (B) 2 (D) 3

JEE/Engineering Exams
Maths
Solution
110
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( begin{array}{rl}left(frac{9}{10}right)^{2} & =-left(x^{2}-x+3right) & =-left(x^{2}-frac{7 x^{2}+1}{2}-frac{1}{4}+3right] 1 & {left[frac{9}{10}right)^{x}=-left[left(x-frac{1}{2}right)^{2}+frac{11}{4}right]} 1 & 11end{array} ) LHS is alw- for Any vell tre for of inj ( Rightarrow ) No solution
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