In the interactive figure below, a function {{MATH_30}} is graphed and an accumulation function {{MATH_31}} is given by {{MATH_32}}. Use the slider to adjust the value of {{MATH_33}}. Notice how the shaded region in the graph changes, and what happens to the value of {{MATH_34}} when the graph of {{MATH_35}} is above the {{MATH_36}}-axis and when the graph of {{MATH_37}} is below the {{MATH_38}}-axis. {{CMD_39}} {{CMD_40}} {{CMD_41}}