Thread: Riemann Sum

Find L4 for f(x)=49cos(pi/2) from [2pi/4,2pi/2]

I thought it would just be zero since there aren't any x's in f(x)? Apparently that's incorrect though. Any help would be wonderful!

Originally Posted by A5HLEY

Find L4 for f(x)=49cos(pi/2) from [2pi/4,2pi/2]

I thought it would just be zero since there aren't any x's in f(x)? Apparently that's incorrect though. Any help would be wonderful!

Either you have a typo or you book has one becuase

for all values of x.


so the left endpoint sum would be



since f(x)=0 for all values of x.