Practice problem
f(x)=∣x∣f(x)=|x|f(x)=∣x∣ continuous at x=0x=0x=0. Choose all facts that prove this statement is correct.
f(0)f(0)f(0) is defined.
f(x)f(x)f(x) is has a "corner" at x=0x=0x=0.
The limit of f(0)f(0)f(0) is the same from the left and right.
The limit of f(x)f(x)f(x) at x=0x=0x=0 exists.
Type a concept, like “slope” or “photosynthesis”.