Part C

Draw the influence line for the shear just to the left of the rocker at $B.$ 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.

Figu

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Add discontinuity lines and select segments to add to the canvas.