1.Let 5f(x)+4f(1x)=1x+35f(x) + 4f\left(\frac{1}{x}\right) = \frac{1}{x} + 35f(x)+4f(x1)=x1+3, x>0x > 0x>0. Then 18∫12f(x) dx18\int_{1}^{2} f(x) \, dx18∫12f(x)dx is equal toLogin to continueOnly logged in users canattempt or see the solution.