solving a simple equation

asked 2013-03-01 15:13:46 +0200

czsan
237 ●8 ●15 ●25

Is there a method to solve the equation x + x^(1/3) == -2 ?

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answered 2013-03-01 15:43:54 +0200

calc314
4191 ●22 ●48 ●113

Here is a numerical approach. I've not been able to get it symbolically.

show(plot(x+ x/abs(x)* abs(x)^(1/3)+2,(x,-5,5)))
find_root(x+ x/abs(x)* abs(x)^(1/3)+2,-2,-1/2)

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Yes, this is right. This equation unsolvable in maple too, because of the third root of negativ numbers. But in Maple there is a surd function, which helps.

czsan ( 2013-03-01 15:55:42 +0200 )edit

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Asked: 2013-03-01 15:13:46 +0200

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Last updated: Mar 01 '13

solving a simple equation edit