expx2dx SolutionTo find the actual value we use excel functi
     exp(-x2)dx     
 
  
  Solution
To find the actual value we use excel function erf
sqrt(Pi)/2*erf(0.4) = 0.3797
Ei is the difference between teh value obtained by method and the actual value
Percentage of error =error *100 / actual value
| Method | Value | Actual | Error | %error | 
| T3 | 0.378641281 | 0.3797 | -0.001 | 0.27% | 
| T6 | 0.379400252 | 0.3797 | -3E-04 | 0.07% | 
| M3 | 0.380159223 | 0.3797 | 0.0005 | 0.13% | 
| M6 | 0.37977917 | 0.3797 | 0.0001 | 0.03% | 
| S6 | 0.379653243 | 0.3797 | 4E-07 | 0.00% | 
| Weighted Avg | 0.379653243 | 0.3797 | 4E-07 | 0.00% | 

