If f(x,y) is an image function of two variables, then the first order derivative of a one dimensional function, f(is:
A. f(x+1)-f(x)
B. f(x)-f(x+1)
C. f(x-1)-f(x+1)
D. f(x)+f(x-1)
Answer:A
If f(x,y) is an image function of two variables, then the first order derivative of a one dimensional function, f(is:
A. f(x+1)-f(x) B. f(x)-f(x+1) C. f(x-1)-f(x+1) D. f(x)+f(x-1)