Calculate the upper sums un and lower sums Ln, on a regular partition of the intervals, for the following integrals. (a) √₁³ (2² (2 – 3x) dx (1) Un (ii) Ln = (b) ² (4+128²) da (1) Un = (ii) Ln = (c) (1) Un (11) In R²₁ where H(a) is the Heaviside function as defined in the course notes. H(x - 2) dx = AY = AY Po A₂ AY

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