On that graph, where X = 6 (horizontal axis) the value of V (vertical) is -1.75kN
If you are referring to the final equation on the bottom right, it's a quadratic and they are working out the value of X for which V= 0 not the value of V where x = 6
On that graph, where X = 6 (horizontal axis) the value of V (vertical) is -1.75kN
If you are referring to the final equation on the bottom right, it's a quadratic and they are working out the value of X for which V= 0 not the value of V where x = 6