What is the value of ( int_{(n-1)T}^{nT} x(t)dt ) according to trapezoidal rule?

([ frac{x(nT)-x[(n+1)T]}{2}]T )

([ frac{x(nT)-x[(n-1)T]}{2}]T )

([ frac{x(nT)+x[(n-1)T]}{2}]T )

([ frac{x(nT)-x[(n+1)T]}{2}]T )

([ frac{x(nT)+x[(n+1)T]}{2}]T )

What is the value of ( int_{(n-1)T}^{nT} x(t)dt ) according to trapez

1.	What is the value of ( int_{(n-1)T}^{nT} x(t)dt ) according to trapezoidal rule?
A.	([ frac{x(nT)-x[(n-1)T]}{2}]T )
B.	([ frac{x(nT)+x[(n-1)T]}{2}]T )
C.	([ frac{x(nT)-x[(n+1)T]}{2}]T )
D.	([ frac{x(nT)+x[(n+1)T]}{2}]T )
Answer» C. ([ frac{x(nT)-x[(n+1)T]}{2}]T )