Part A

Draw the influence line for the force in member $\backslash ($ B K $\backslash ).$ Indicate the values of the influence line at each joint along the bottom cord of the truss.

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

Note $2-$ You should not draw an "extra" vertical line at the point where the influence line passes the x $-$axis.

Note $2-$ Draw discontinuity lines at each joint along the bottom cord.

$(4)+$

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