Considering four subintervals, the value of $$\int_0^1 \frac{1}{1+x} d x$$​ by Trapezoidal rule is:

The value of $$\int_C \frac{3 z+1}{z(2 z+1)} d z$$​ where C is the circle |z| = 1 is:

Considering four subintervals, the value of $$\int_0^1 \frac{1}{1+x} d x$$​ by Trapezoidal rule is:

Evaluate the given expression.

$$\int \frac{\sqrt{81-(\log x)^2}}{x} d x$$​​

What is the area of the region bounded by the curve y = $$\sqrt{32-\text{x}^2}$$​ and x-axis in the first quadrant?