math
posted by Julia .
Compute delta(y) and dy for the given values of x and dx=delta(x)
y=x^2 , x=8 , delta(x)=0.5
Delta(y)= ???
dy = ???
I got dy=8 by doing:
dy= (f prime of x)dx
dy=2xdx
dy=2xdelta(x)
dy=2*8*0.5
dy=8
but I have not clue how to find delta(y) please help!
deltay = y(x+deltax) y(x)
= (8.5)^2  (8)^2
= (8 + 1/2)^2  8^2
= 8^2 + 8 + 1/4  8^2= 8.25
check my work.
thanks!
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