Question 1
What is the result of the integral $ \int (2x + 1)^2 \cdot 2 \, dx $ using substitution?
Question 2
Evaluate the integral $ \int (x^2 + 4)^{5} \cdot 2x \, dx $ using substitution.
Question 3
Which substitution is best for evaluating the integral $ \int \sin(3x) \cdot 3 \, dx $?
Question 4
Evaluate the integral $ \int e^{x^2} \cdot 2x \, dx $ using substitution.
Question 5
What is the integral $ \int \frac{1}{x \ln(x)} \, dx $ using substitution?
