06/03/14

Can a figure have two lines of symmetry and no rotational symmetry?

Can a figure have two lines of symmetry and no rotational symmetry?  

Optimization Problems

A cylindrical can is to have a volume of 1L.  a) Find the height and radius of the can that will minimize the surface area b) What is the ratio of the height to the diameter? Do pop cans have a... more

03/30/14

Find the derivative of f(x)

Find the derivative of f(x)= x^2/3(x^4/3-x^1/3+x^-5/3)

03/07/14

How can I find the speed of a car from a yaw mark?

If someone is driving on a snow covered road with a drag factor of .2  and breaks suddenly, leaving a yaw mark with a 52 ft chord and a middle ordinate of 6 ft, what is  the minimum speed they... more

03/02/14

Find the requested composition or operation.

f(x) = 8x - 5, g(x) = 2x+6 Find (fg)(x).

03/02/14

Find the requested composition or operation.

f(x) = 5-x, g(x) = -9x+7 Find (f + g)(x).

03/02/14

Find the requested value.

f(-5) for f(x) = {7x     if x ≤ -1                       {x-9    if x > -1

03/02/14

Evaluate –x^2 + 2x – 4 for x = 5

Can someone review the process for this? Thank you!  

03/02/14

factor 2x^2+x-14

Please help me factor this.

Let f(x) = integral from (-2) to (x^2-3x) of e^(t^2) dt. At what value of x is f(x) a minimum?

At what value of x is f(x) a minimum?   I know f'(x) = e^((x^2-3x)^2) , but I don't know how to continue.   Thanks!

help simply 135b^2

would you help me simplify   ___________        ______ √135b^2c^3d   x  √5b^2d       thanks

what is square root

how do I solve √9y = 49       how do I solve (4-3√2)^2, please show steps

01/17/14

Find the volume?

The region in the first quadrant between the x-axis and the graph of y=6x-x^2 is rotated around the y-axis. The volume of the resulting solid of revolution is given by   a) ∫ pi(6x-x^2)^2 dx from... more

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