Calculate the left Riemann sum for the given function over the

given interval, using the given value of n$.($When rounding, round

your answer to four decimal places. If using the tabular method,

values of the function in the table should be accurate to at least

five decimal places.$)$HINT $[$See Example $2.]$ f$($x$)=10$x$2$ over $[1,5],$ n $=4$