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Qttuon 2 These questions are related to the applications of Engineering Mathematics. (a) (b) Solve the following question. giving the answers as exact togarithms where appropriate. cosh(t) - l = gainh) (10 merits) Sarah invests a total of RM 10.000 in three accounts. one paying 5% interest. another paying 8% interest. and the third paying 9% interest. The annual interest earned on the three investments last year was RM 770. The amount invested at 9% was twice the amount invested at 5%. By using the Gaussian elimination method. determine the value of investment for each rate. (15 marks)