3 1.2 IV. (a) Use the limit of Riemann sums to calculate(2x3+4x2 +3x + 5)dx. Does this calculation find the area under the curve and above the x-axis? ff/-n(n+162n + 1) í¨3-(n(n+1) n(n + Formulas: 2/-M(2+D Formulas:i- (b) Check your answer using the Fundamental Theorem of Calculus.