Solution:
Given:
Hence,
Splitting the integral,
[tex]\begin{gathered} \int_0^12f(x)dx-\int_0^1g(x)dx=2\int_0^1f(x)dx-\int_0^1g(x)dx \\ \\ Substituting\text{ the given integrals,} \\ 2(4)-(-3)=8+3 \\ =11 \end{gathered}[/tex]
Therefore, the answer is 11
