1.

If range of f(x) = (x^(2) - 3x + 2)/(x^(2) - ax+ 4) is R- (1) then sum of all possible real value(s) of 'a' is

Answer»

4
3
5
None of these

SOLUTION :`f(X) = ((x -1)(x -2))/(x^(2) - ax + 4)`
for range of `f(x)` to be R - {1}
`x^(2) - ax + 4 = (x - 1)^(2) or x^(2) - ax + 4 = (x - 2)^(2)`
not possible `""a = 4`.


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