approximate to two decimal places, find the x-intercepts, local maximum and local minimum: p(x)=x^3+2x^2-3x-4

Question

amistre64 · Answer

derivative it :) for the max and min

amistre64 · Answer

3x^2 +4x -3 = 0 is possible max or min

amistre64 · Answer

-4/6  +- sqrt(16 -4(-3)(3))/6

amistre64 · Answer

(-2 +- sqrt(5))/3 = max min possibilities

anonymous · Answer

i know how to get the max/min. Im having problems with finding the x-int. This assignment is going to close in a minute so im trying my hardest to find the answer.

amistre64 · Answer

quickest way is prolly input it into wolframs graphing calcultor

anonymous · Answer

That website is confusing to me. I dont know which is which.

amistre64 · Answer

http://www.wolframalpha.com/input/?i=plot+e^(-0.2x)*sin(x)+from+x%3D0+to+10

amistre64 · Answer

the roots are approx.  -1, -2.561 and 1.561

amistre64 · Answer

the min: .535

the max:  -1.868

anonymous · Answer

thanks alot.