Let W = 3x Cos 4y $x = e ^ { - t }$

question 20

Essay

Let w = 3x cos 4y.If $x = e ^ { - t }$ and $y = \ln t _ { 1 }$ find $\frac { d w } { d t }$ at the point t = 3.Give your answer to 2 decimal places.

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Definitions:

European Put

A type of option contract that gives the holder the right, but not the obligation, to sell an underlying asset at a specified price on or before a specific date.

European Call

An option contract giving the holder the right, but not the obligation, to buy a specified asset at a predetermined price on or before a specific expiration date, only exercisable on the expiration date.

Net Profit

The amount of income that remains after subtracting all expenses, taxes, and costs from total revenue.

Convertible Bond

A type of bond that can be converted into a predetermined number of the issuer’s equity shares at certain times during its life.