i have been give the equation
f(x) = 1/(x+3) + 1/(x-1)
i am trying to find the stationary points. so
f '(x) = -1/(x+3)^2 -1/(x-1)^2
f '(x) = 0 for stationary point
then when i simplified down i get 2x^2+4x+5 = 0, which is undefinable
i looked at the derivative on the graph and...
The armature of an electric motor, (the inside coils) are made from copper and have extremely low resistance. When you connect the motor to a voltage supply and supply some current to the motor, even though the resistance is low, the current may be as little as 2 or 3 Amps. Where does the...
A man standing on a pier pulls a small boat towards him using a rope attached to the prow. The rope is pulled from a height of 2.4m above its point of attachment to the boat. The rope is pulled at a rate of 30 cm a minute. At what rate is the boat moving towards the pier when it is 3.2m away...
A converging lens (convex) and a concave mirror, both of focal length 5.0 cm, are arranged with their axes in line. The lens and the mirror are 10.0 cm apart and a candle is placed 3 cm infront of the mirror.
By using a ray diagram or some other metho, find the location of all the images...
We have been given the task of finding the volume of a football (elliptical).
i know the area for an ellipse is \frac{x^2}{a^2} + \frac{y^2}{b^2} = 1
where a=distance from center to major axis x-direction (Half the length of the ball) (a=14cm)
and
b=distance to minor axis...