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homework

sketch the graph of the function f(x)=2x^3-9x^9+12x

i dont want the awnser i just cant remember how to do it any pointers???

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fractal.scatter offline Verified User (10 months, 1 week) Long Term User Shouts: 339 #
An Unknown Location | 1 month, 2 weeks ago (7 minutes after post)

Make a table first, say of the range x=[-5,5] and then work out each value of y for that x and plot those points.

But it does say sketch, not draw. So technically what it is asking for are the solutions of the equation. i.e. what is x when y=0 (there will be three values, but they may be the same). And what is the value of y when x=0.

The equation is a cubic and you should know what the resulting graphs of cubics have in common.

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fractal.scatter offline Verified User (10 months, 1 week) Long Term User Shouts: 339 #
An Unknown Location | 1 month, 2 weeks ago (9 minutes after post)

Actually I lie. It’s not a cubic, it’s a ninth-order polynomial.

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callum.t-po offline Verified User (1 year, 10 months) Long Term User Shouts: 0 #
An Undisclosed Location | 1 month, 2 weeks ago (16 minutes after post)

fractal~scattered~ wrote:
Actually I lie. It’s not a cubic, it’s a ninth-order polynomial.

dam that dosent sond good :-/ pritty sure it was ment to be cubic

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Help me with: Geography question: there’s a small island off the south coast of Iceland, but i can’t remember how to spell it.
fractal.scatter offline Verified User (10 months, 1 week) Long Term User Shouts: 339 #
An Unknown Location | 1 month, 2 weeks ago (18 minutes after post)

callum.t-po wrote:

fractal~scattered~ wrote:
Actually I lie. It’s not a cubic, it’s a ninth-order polynomial.

dam that dosent sond good :-/ pritty sure it was ment to be cubic

Yeah I think the -9x^9 is a typo. otherwise you’re not gonna have fun trying to solve that.

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callum.t-po offline Verified User (1 year, 10 months) Long Term User Shouts: 0 #
An Undisclosed Location | 1 month, 2 weeks ago (22 minutes after post)

fractal~scattered~ wrote:

callum.t-po wrote:
fractal~scattered~ wrote:
Actually I lie. It’s not a cubic, it’s a ninth-order polynomial.

dam that dosent sond good :-/ pritty sure it was ment to be cubic

Yeah I think the -9x^9 is a typo. otherwise you’re not gonna have fun trying to solve that.

yeah it is ment to be f(x)=2x^3-9x^2+12x

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Help me with: Geography question: there’s a small island off the south coast of Iceland, but i can’t remember how to spell it.
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