Need with math- summation notation! find indicated sum using graphs it’s number 63

Both the ai and the bi are symmetrical about zero, so their sum will be zero. Any multiple of their sum will also be zero, and any combination involving their sum or multiples thereof will be zero.

63. The sum is zero.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

i think the amount would be $140.62