Evaluate the following integral using trigonometric substitution. Integral from 7 StartRoot 49 - x2 EndRoot dx
1. What substitution will be the most helpful for evaluating thisintegral?
2. Find dx?
3. Rewrite the given integral using substitution.

Step-by-step explanation:

1. Given the integral function , using trigonometric substitution, the substitution that will be most helpful in this case is substituting x as i.e .

All integrals in the form are always evaluated using the substitute given where 'a' is any constant.

From the given integral, where a = 7 in this case.

The substitute will therefore be  

2.) Given

cross multiplying

3.) Rewriting the given integral using the substiution will result into;

c is the final : )