Answer:
[tex]f(2,0)=4[/tex]
[tex]f(2,-3)=7[/tex]
Step-by-step explanation:
We are given that a function
[tex]f(x,y)=x^2-2xy-y^2[/tex]
a.We have to find the value of f(2,0) and f(2,-3)
Substitute the value x=2 and y=0 then, we get
[tex]f(2,0)=(2)^2-2(2)(0)-0[/tex]
[tex]f(2,0)=4[/tex]
Now, substitute the values x=2 and y=-3 then we get
[tex]f(2,-3)=(2)^2-2(2)(-3)-(-3)^2[/tex]
[tex]f(2,-3)=4+12-9=7[/tex]
[tex]f(2,-3)=7[/tex]