Consider the beam in $($Figure $1).$ Assume the support at A

is fixed. Solve this problem using the basic method.Draw the influence line for the vertical reaction at $A.$ Indicate the values of the influence line at each marked point

along the beam.

Click on "add vertical line off" to add discontinuity lines. Then click on "add segment" button to add functions

between the lines.

Note $-$ Draw discontinuity lines at each marked point along the beam.

$-4+$

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