Answer:
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;


I think this question is for you to answer it with your own opinion, think about it and just answer it with what you think :)
Answer:
8. 1 x 10 raise to power 1 is the correct answer
Answer: Yes, you're right.
Step-by-step explanation: