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edison (4588)

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Olaaa!! Perrrfect answer. 806  [1085 rates]

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To solve cubic equations use following tips:
 
Let  be the roots of the cubic equation
 
a0x3 + a1x2 + a2x + a3 = 0,
 
then  +   +   =  - (a1/a0)  .......(1)
 
        +  +  =  (a2/a0)    .......(2)
 
        = - (a3/a0)    ......(3)
 
now solve equations (1), (2) and (3) to find the roots.

The Scientist does not study nature because it is useful; he studies it because he delights in it, & he delights in it because it is beautiful. If nature were not beautiful, it would not be worth knowing, life would not be worth living. Ofcourse I do not here speak of that beauty that strikes the senses, the beauty of qualities & appearances; not that I undervalue such beauty, far from it, but it has nothing to do with science; I mean that profounder beauty which comes from the harmoniuos order of the parts, & which a pure intelligence can grasp.
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