I need to find the area of sinhx2 from 0 to 3 so fat I have

I need to find the area of sinh(x/2) from 0 to 3 so fat I have that the integral of sinh(x/2) is 2cosh(x/2) but how do I plug in the values 0 and 3 to get the area....what about the h?

u can use cosh(x)= (e^x+e^-x)/2

so that u can get area 2*(cosh(1.5)-cosh(0))=(e^1.5+e^-1.5-2)=2.70482