24 When a current, I, flows through a given electrical circuit, the power, W,
2
of the circuit can be determined by the formula W = 120I – 12I
.
What amount of current, I, supplies the maximum power, W?
25 The brightness of the star MIRA over time is given by the equation
π
y = 2 sin
x + 6, where x represents time and y represents brightness.
4
What is the period of this function, in radian measure?
[10]
Math. B – Jan. ’04