Question

When applying substitution, what must always be rewritten in terms of the new variable?

पर्याय

• Only the function

• Only the constant of integration

• Both the function and \[dx\]

• Only \[dx\]

Answer 1

The substitution is complete only when both the function and \[dx\] use the new variable. Leaving an \[x\]-term prevents integration solely in the new variable.