May I know which one is grammatical?
We will investigate on how different values of V affects the behaviour of the program.
We will investigate on how different values of V affect the behaviour of the program.
Answer
Given that “different values of V” is plural (regardless of the plurality of _V itself), you would use affect.
We will investigate how different values of V affect the behaviour of the program.
Notice that I’ve removed on as that is not grammatically correct.
Another example could be the following one.
Seven breeds of dog are on show here today.
Attribution
Source : Link , Question Author : william007 , Answer Author : Richard Williams
