Mathematics, 12.04.2021 17:10 lufung8627

Hello, I need some help solving and explaining the next problems: 1) Using Riemann sums check that: \int _a^b3x^2dx=b^3-a^3\:∫ a b 3x 2 dx=b 3 −a 3 2)Using Riemann sums, calculate: \int _1^3\left(4x^3-3x^2+1\right)dx∫ 1 3 (4x 3 −3x 2 +1)dx

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Hello, I need some help solving and explaining the next problems: 1) Using Riemann sums check that: ﻿\int _a^b3x^2dx=b^3-a^3\:∫ a b ​ 3x 2 dx=b 3 −a 3 ﻿ 2)Using Riemann sums, calculate: ﻿\int _1^3\left(4x^3-3x^2+1\right)dx∫ 1 3 ​ (4x 3 −3x 2 +1)dx﻿

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Hello, I need some help solving and explaining the next problems: 1) Using Riemann sums check that: \int _a^b3x^2dx=b^3-a^3\:∫ a b 3x 2 dx=b 3 −a 3 2)Using Riemann sums, calculate: \int _1^3\left(4x^3-3x^2+1\right)dx∫ 1 3 (4x 3 −3x 2 +1)dx