A Level Mathematics Questionbanks

( x = arctan 1 = A1 (not 45o) The area enclosed by the two curves and the y-axis is shown sketched below. Shaded area = dx = M1 (subtraction) A1 = A1 ... So integral = ln + C A1. Let C = ln A; integral = ln + ln A = ln M1 A1 [7] 10. a) Using integration by parts: dx . Let u = ln then = M1 A1 , so v = x. A1 ... ................
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