If a0, a1, a2, a3 are all the positive,...

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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