1.

Under what conditions is 2x^(2)+kx+2 always positive ?

Answer»


Answer :a=2 which is `GT0 and D=K^(2)-16therefore` The given quadratic will always be POSITIVE when `k^(2)-16 lt 0,` i.e., `k^(2) lt 16`, i.e., `-4 lt k lt 4`.


Discussion

No Comment Found