The equation , where x is a variable, has real roots. Then the interval of p may be any one of the following:
Discriminant of the given equation
The minute hand of a clock is 10 cm long. How far does the tip of the hand move in 20 minutes?
A rail road curve is to be laid out on a circle. What radius should be used if the track is to change direction by 25o in a distance of 40 metres?
Find the minimum and maximum values of .
If is an obtuse angle and is an acute angle.
, then x + y + z is equal to
is equal to