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OpenStudy (anonymous):
z=4x+y^2 has some sort of 3d graph. Is the point (5,4,36) on the curve? Do I just plug in and get 36=36 so the answer would be yes?
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OpenStudy (tkhunny):
"plug in" doesn't mean anything. Yes, you substitute the given values and see if they meet the requirements of your relation. Get something sensible, like 36 = 36, and it's in the curve. Get something silly, like 30 = 14, and it's not on the curve.
OpenStudy (anonymous):
Ok, thank you!
OpenStudy (tkhunny):
* surface
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