In: Math
An investor has a certain number of units of a new currency whose price is fluctuating periodically. The number of units that the investor holds, N(x), as a function of time x in days is given by: N(x) = 2x π + 5 The price of each unit, P(x), as a function of time x in days is given by: P(x) = sin x 2 + 1 The total value of the investment, T(x), as a function of time x in days is given by the number of units × the price of each unit: T(x) = N(x) · P(x) a) Find the total value of the investment at x = 5π 2 days. b) Find the derivative of T(x). c) What is the instantaneous rate of change of the total value of the investment at x = 5π 2 days?