Improved Eulers Method!

[ellagrayjo]

you are given the formula dy/dt=5t-0.2y

y(0)=20

and the step size is at 0.2

now you have to find the improved eulers method. I know eulers but improved eulers is just so confusing

 

[HallsofIvy]

What is your understanding of the definition of the "improved" Euler's Method"?