1.

The number of real solution of the equation `tan^(-1) sqrt(x^2-3x +7) + cos^(-1) sqrt(4x^2-x + 3) = pi` is

Answer» Since `sqrt(x^2-3x+7) ge 0 rArr 0 le tan^(-1)sqrt(x^2-3x+7) gtpi/2`
`sqrt(4x^2-x+3) ge 0 rArr 0 lt cos^(-1)sqrt(4x^2-x+3) le pi/2`
`rArr 0 lt LHS lt pi rArr `The given equation has no solution.


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