Suppose that and are integrable functions and that use the properties of the definite integral to find each of the following:
∫₁₂¹⁸〖f(x)dx=23〗 ∫₁₂²³〖f(x)dx=19 ∫₁₂²³〖g(x)dx=14〗〗

∫₁₈¹⁸〖g(x)dx= ……〗