CUET Mathematics 2022 6 Aug Shift 2 PYQs

$\int \sqrt{1 - 49x^2} \, dx$ is equal to

The Value of $\int_1^3 |2x - 1|dx$ equal to

The value of $\int_{-a}^a f(x)dx$ where $f(x) = \frac{7^x}{1+7^x}$ is: