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If `a_0, a_1, a_2, a_3` are all the positive, then `4a_0x^3+3a_1x^2+2a_2x+a_3=0` has least one root in `(-1,0)` if (a) `a_0+a_2=a_1+a_3 ` and `4a_0+2a_2>3a_1+a_3` (b) `4a_0+2a_2<3a_1+a_3` (c) `4a_0+2a_2=3a_1+a_0`and `4a_0+a_2lta_1+a_3` (d) none of these

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CENGAGE ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
  1. If |z-(1/z)|=1, then a. (|z|)(m a x)=(1+sqrt(5))/2 b. (|z|)(m in)=(s...

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  2. zo is one of the roots of the equation z^n cos theta0+ z^(n-1) cos th...

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  3. If a0, a1, a2, a3 are all the positive, then 4a0x^3+3a1x^2+2a2x+a3=0 ...

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  4. If 1,z1,z2,z3,.......,z(n-1) be the n, nth roots of unity and omega b...

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  5. If a x ^2+b x+c=0 has imaginary roots and a-b+c >0 then the set of p...

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  19. if costheta , sinphi , sintheta are in g.p then check the nature of ro...

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