# calculus 3

posted by
**alya**
.

determine the value of the constant α so that f(x,y) is continuous at (1,-1) if

f(x,y):

i)sin(x+y)/(x^(2 )– y^2 (x,y)≠(0,0)

ii) α (x,y)=(0,0)

posted by
**alya**
.

determine the value of the constant α so that f(x,y) is continuous at (1,-1) if

f(x,y):

i)sin(x+y)/(x^(2 )– y^2 (x,y)≠(0,0)

ii) α (x,y)=(0,0)