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TankM2
Feb 20, 2008, 07:57 PM
how do I find the local maximum on the equation 3x^4+4x^3?
galactus
Feb 21, 2008, 07:37 AM
3x^{4}+4x^{3}

Differentiate, set to 0 and solve for x.

After you differentiate, you can easily factor and see the two zeros.