- #1
fitz_calc
- 41
- 0
Homework Statement
Find the value of dy and deltay for y=2x^3-4x, x=2 and dx = deltax = 0.1.
The Attempt at a Solution
dy/dt= 6(4)(.1)-4(.1) = 2
This is correct. However, I do not understand how to get deltay ? I tried 2/2*2^3-4(2) = .25 -- however, the answer is 2.12. how do they get this value?