answer with solution

$1\mathrm{.}1.$ Draw the influence line of shear at $\backslash ($ C $\backslash ).$

$1\mathrm{.}1\mathrm{.}1$ What is the maximum positive ordinate?

$1\mathrm{.}2.$ Draw the influence line of shear at $\backslash ($ A $\backslash ).$

$1\mathrm{.}2\mathrm{.}1$ What is the maximum positive ordinate?

$1\mathrm{.}3.$ Draw the influence line of the moment at C $.$

$1\mathrm{.}3\mathrm{.}1$ What is the maximum negative ordinate?

$1\mathrm{.}4.$ Draw the influence line of the moment at A $.$

$1\mathrm{.}4\mathrm{.}1$ What is the maximum negative ordinate?