Practice problem
If f(x)=3x2−3f(x)=3x^2-3f(x)=3x2−3 and g(x)=x+1g(x)= x+1g(x)=x+1, which of the following are continuous over all real numbers?
f(x)f(x)f(x)
g(x)g(x)g(x)
(f⋅g)(x)(f\cdot{g})(x)(f⋅g)(x)
fg(x)\frac{f}{g}(x)gf(x)
Type a concept, like “slope” or “photosynthesis”.