Limit of a sum
lim [f(x) + g(x)] = lim f(x) + lim g(x)
Limit of a difference
lim [f(x) - g(x)] = lim f(x) - lim g(x)
Limit of a constant multiple
lim [cf(x)] = c lim f(x)
Limit of a product
lim [f(x)g(x)] = [lim f(x)] [lim g(x)]
Limit of a quotient
lim [f(x)/g(x)] = [lim f(x)] / [lim g(x)]
Limit of a power
Limit of a root
Continuous
Of a function or curve; extending without break or irregularity