f(x,y)=(x^2-4x)cos(πy), I need to sketch the level curves for c=0, 1, and -1 of this function for |x|, |y|≤4.
So far I sketched the curves for f=0, and then I do not know how to proceed.
1 = (x^2-4x)cos(ny) and graph that function, the same for c = -1 etc. so in the case of c = 1 u wud obtain a function of f(x) rather than f(x,y). You also must take the boundaries into account when considering the domain and range of your f(x). I hope this clears the problem up for you.