WebGraphing.com Forum (Global ATOM)

addition Formula

Use the appropriate addition formula to find the exact value of the expression. sin(11pi/12)

Function value

Find function value of Cos^2 Pi/8

Law of cosine/sine

Find the requested information using the law of cosines and/or the law of sines. Round to three decimal places. A triangle has sides a = 4 and b = 2 and angle C = 50°. Find the length of side c. I tried using Law of cosine: C^2=4^2+2^2-2(cos50)8 Am not sure if I was doing it right. Thanks for your help.

Graphing

Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function. f(x) = x^3 - 2x^2 - 3x + 19 A) [-20, 20] by [-100, 100] B) [-5, 5] by [-5, 25] C) [-2, 2] by [-10, 10] D) [-5, 25] by [-5, 5] I was unable to determine which one is correct. May be the first two?

Appropriate viewing window.

Determine an appropriate viewing window for the given function and use it to display its graph. f(x) = -0.7x^6 - x^5 + 5x^4 - 4x^3 - 6x^2 + x - 3 How do you determine appropriate viewing window? Thanks.

Graphing the function.

Graph the upper half of the circle defined by the equation x^2 + y^2 - 10x - 12y + 45 = 0. Am not sure on this one. Please help. thanks.

Graphing

I was unable to graph this question: 1.Graph y=tan(x) and y=cot (x) together for -7

graphing inequality where the variable is an exponent

Hi. New to the site so maybe I missed this. Trying to graph y>=5^x-2 but the 2D inequality calculator doesn't seem to like this. Also, I don't see variables as exponents in any of the examples. Please help!

Find a function y = g(x) so that (f * g)(x) = x

Solve the problem. Let f(x) = x/x-9. Find a function y = g(x) so that (f *g(x) = x.

Expressing the given function as a composite of functions f and g

3. Express the given function as a composite of functions f and g such that y = f(g(x)). y = 1/x^2-4

solving problems

2. Solve the problem. If f(x) = 7x + 13 and g(x) = 4x - 1, find f(g(x)). thanks

Function problems in Precalc.

1. Find the domain and range for the indicated function. f(x) =sqrt(x+7) , g(x) = sqrt (x-7) ; f + g

Requesting help with parameters

Greetings to the group. This is my first post. I would like to be able to adjust the view window of a graph so that I can see the intersection of two equations. The results I get are a virtually flat line from the origin to the right margin. Thanks for any discussion or help. I have a problem in compound interest that I would like to graph to include with a paper I am writing using MS Word ...

problem finding the distance between P and Q

P(6,-3), Q(-3,2) the neg. signs messes me up!

Graph Appearance Preferences

1. Is there any way to show gridlines on a graph? 2. Is there any way to just get a blank graph? 3. Once the max/min values are set for a graph, can the tick mark selection be adjusted. For example, instead of tick marks every 0.5, just by 1.