# calculus

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Find a value for k so that 2x^2 + kx + 1 has no real roots.

• calculus -

When an expression has no real roots, the discriminant is less than zero.
For example,
3x²+kx+2=0
has no real roots when
k²-4*3*2<0
or
k<24

Proceed along the same lines for the given equation.

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