definite integral problem

[integragirl]

please help solve the following definite integral, sqrt1+t dt with the lower limit being 1261 and the upper limit being sin(x). Any help would be great!

 

[galactus]

Do you mean \(\displaystyle \sqrt{1+t}\)?. I must say, those are odd limits of integration

Are you studying the second fundamental theorem of calculus?.

 

[Razor X]

Assuming you’ve learned it, use u substitution.