Tuesday

March 3, 2015

March 3, 2015

Posted by **suie** on Tuesday, February 5, 2013 at 8:48pm.

- pre-calculus -
**Damon**, Tuesday, February 5, 2013 at 9:01pme^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)

- pre-calculus -
**suie**, Tuesday, February 5, 2013 at 9:03pmbut the answers are 0,-2,2

- pre-calculus -
**Reiny**, Tuesday, February 5, 2013 at 9:36pmIf the equation is as you typed my money is riding with Damon.

Your answers don't even come close to satisfying the equation.

- pre-calculus -
**suie**, Tuesday, February 5, 2013 at 9:52pmare u sure b/c the answers are from the book

**Answer this Question**

**Related Questions**

Pre-Calculus/Calculus - I am too embarassed to ask this Calculus (really pre-...

Pre Calculus - Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)

Pre-Calculus - I am in Honors Pre-Calculus and am having a hard time ...

Pre-Calculus - I'm trying to finish up my pre-cal homework and I am stuck on 2 ...

Pre-Calculus - I'm trying to finish up my pre-cal homework and I am stuck on 2 ...

pre-ap pre calculus - To solve an equation by finding x-intercepts, Cynthia ...

Pre Calculus 12 - Im going over my pre calculus 12 exam, and I need help with ...

Pre-Calculus - Can you show me how to find the rectangular equation: r=2cos(...

pre calc - A math teacher uses four algebra books, two geometry books, and three...

pre calculus - 2k^2+5k-9