What is the partial derivative with respect to x of the function ?=4?+6?=4x^3+6y evaluated at x=2 and y=2?
a. 38
b. 32
c. 54
d. 48
Solution: (d) 48
Given,
?= 4x3 + 6y
x= 2 and y = 2
The Partial derivative of U with respect to x is written as follows:
Therefore, at x= 2 and y=2, the partial derivative of U with respect to x is
In order to calculate To calculate ∂U/∂x, we simply view yy as being a fixed number and calculate the ordinary derivative with respect to x, we simply view y as a fixed number and calculate the ordinary derivative with respect to x and for ∂U/∂y, we assume x to be a constant value.
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