Posted by nic on Saturday, February 26, 2011 at 11:31pm.
please help. Compute Δy and dy for x = 4 and dx = Δx = 0.2. (Round the answers to three decimal places.)
y = 4x  x2....im lost to were to start solving for delta y

calculus  Spider Man, Thursday, March 17, 2011 at 9:56pm
To compute for dy, you use the equation dy=f'(a)*dx where f'(a) is the derivative of the function given.
So dy=(42x)*dx Plug in the values
dy=(42(4))*(.2)=? SOLVE
To find Δ y, you use the equation
Δy=f(xΔx)f(x) Plug in the values
Δy=(4(4.2)(4.2)^2)(4(4)4^2)=? SOLVE
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