Posted by **Katie** on Thursday, November 16, 2006 at 9:13pm.

y= 3x^2+3x+2

Find the diferential dy when x=4 and dx = 0.4 and when dx = 0.8.

How do I find these diferentials?

y= 3x^2+3x+2

dy= 6x dx + 3dx

Now put in the values, and compute.

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