Chapter 28.6, Problem 31E

(a)

To determine

To identify: The form of ${\displaystyle \int \frac{2dx}{4+9x^2}}$ is inverse sine, inverse tangent, logarithmic, or general power.

(b)

To determine

To identify: The form of ${\displaystyle \int \frac{2dx}{4+9x}}$ is inverse sine, inverse tangent, logarithmic, or general power.

(c)

To determine

To identify: The form of ${\displaystyle \int \frac{2dx}{\sqrt{4+9x^2}}}$ is inverse sine, inverse tangent, logarithmic, or general power.