If the product of the roots of the equation `2x^2 + ax + 4 sina = 0` is 1, then roots will be imaginary, if

If the product of the roots of the equation 2x^(2)+ax+4sin a=0 is 1, then roots will be imaginary,if

If the product of the roots of the equatiin 2x^2+ax+4sina=0 is 1, then the roots will be imaginary if (A) aepsilon R (B) aepsilon {(-7pi)/6, pi/6} (C) aepsilon {pi/6, (5pi)/6} (D) none of these

If the product of the roots of the equation x^(2) - 5 kx + 2e^(4"Ink") - 1 = 0 is 31, then sum of the root is

The roots of the equation x^(2) + ax + b = 0 are "______" .

The product of purely imaginary roots of the equation x^4+x^2−2=0 is

If one root of the equation 2x^(2)+ax+6=0 is 2 then a=?

If the product of the roots of the equation (a+1)x^(2)+(2a+3)x+(3a+4)=0 is 2 then find the sum roots.

If a and b are complex and one of the roots of the equation x^(2) + ax + b =0 is purely real whereas the other is purely imaginary, then

. If the difference of the roots is equal to the product of the roots of the equation 2x^(2)-(a+1)x+(a-1)=0 then the value of a is