Using n strips of equal width, show that the area under the graph y = x 2

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Using n strips of equal width, show that the area under the graph y = x2 between x = 0 and x = c satisfies the inequality

-1 h? r < area

and deduce

S. 0 (a) xdx = c (b) (b S. f.de - (c) xdx = (ba) x/ dx = (b/ - /2) (Recall that  = n(n+1)(2n + 1) =14

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