Question

, dx" alt="\int\limits^a_b {7x} \, dx" align="absmiddle" class="latex-formula">

Answer 1

Answer:

$\frac{7}{2}a^2 - \frac{7}{2}b^2$

Explanation:

$\int\limits^a_b {7x} \, dx$

$=[\frac{7}{2}x^2]^a_b$

$=\frac{7}{2}a^2 - \frac{7}{2}b^2$