cosh(t) graph - using cosh(t)=0.5*(e^t+e^(-1*t)) - and its integral with t0=0. Mathematics for Electrical Engineering and Computing plotXpose app problem

cosh(t) graph - using cosh(t)=0.5*(e^t+e^(-1*t)) - and its integral with t0=0. Mathematics for Electrical Engineering and Computing plotXpose app problem