Posted by suie on Tuesday, February 5, 2013 at 8:48pm.
e^x (x^3 - 4) = 0
e^x = 0
x = -oo
x^3 = 4
x = 4^(.333....)
Not sure if you do complex arithmetic
360/3 = 120
if so you also have two complex roots
one at +120 degrees and one at - 120
x = r (cos 120 + i sin 120)
x = 4^(1/3) ( -.5 + i sqrt3/2)
x = 4^.3333...(.5)(-1+isqrt 3)
and the other is
x = 4^.3333...(.5)(-1-isqrt 3)
but the answers are 0,-2,2
If the equation is as you typed my money is riding with Damon.
Your answers don't even come close to satisfying the equation.
are u sure b/c the answers are from the book
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