Graphing  Trigonometry
posted by Sam .
Below is the graph of y = a cos(bx+c)+d, where a, b, and c are positive, and c is as small as possible. Find a + b + c + d.
prntscr. com/20mkyo
The link is to a screenshot of the graph. (without spaces)
I'm unsure of how to solve  I tried it and got y = 2 cos (2/3x + 5pi/2) + 1 but it is wrong....help would be appreciated, thanks.

maxmin = 4, so a=2
center of wave is at y=1, so d=1
period is 3pi, so b=2/3
wave is shifted right by 3pi/2, so we have 2/3 (x3pi/2) = 2/3 x  pi
y = 2cos(2/3 x  pi) + 1 
thanks a lot man :)

thanks a lot steve you're awesome and helping me a lot on these problems I've tried working on them and when I couldn't you helped me so thanks
Respond to this Question
Similar Questions

trignometry
use degree measure for your answers. use a calculator and round the results to one decimal place for (c) and (d) (a) in triangle ABC, sin B = square root of 2 all over 2. What are the possible values for angle B? 
calc
find the area between the xaxis and the graph of the given function over the given interval: y = sqrt(9x^2) over [3,3] you need to do integration from 3 to 3. First you find the antiderivative when you find the antiderivative … 
math (graphing)
I need to graph "y = 2x+5" and "y = 4/5x3"... I don't think it's possible to help graphing on this site.. so can you please tell me any other sites where it would show how to graph those equations? 
Math
Graph and identify the kind of conic the graph represents: a. x(t)=3 cos t y(t)=3 sin t on [0,2pi] b. x(t) =2 cos t y(t) =5 sin t on [1,5] I tried graphing A on my TI89 calculator as y(1)=3 cos x and y(2)=3 sin x. All I see are two … 
trigonometry
I need help finding the key points for the graph y=1/3 cos x and y=sin 2piex/3 I just don't understand how to graph this and find keypoints. 
Trigonometry
I'm having a lot of trouble with graphing trig functions. Can anyone tell me how to graph this equation on a graphing calculator? 
Trigonometry
Directions: Use a graphing utility to approximate the solutions of the equation in the interval [0,2π) by setting the equation equal to zero, graphing the new equation, and using the ZERO or ROOT feature to approximate the xintercepts … 
PreCalculus
For the function f(x)=12x^3+4x^227x9 describe the end behavior. Find the real zeros of f and determine whether the graph crosses or touches the xaxis at each xintercept. Use the zeros of f and test numbers to find the intervals … 
Math: Trigonometry
For how many values of n with 0<=n<=100 is the graph of f(x) = sin(x + n) identical to the graph of g(x) = cos(x)? 
Calculus
Use a graphing utility to graph the polar equation shown below. r = cos 5Θ + n cos Θ, 0 ≤ Θ ≤ π For the integers n = 5 to n = 5. As you graph these equations, you should see the graph change shape from a heart to a bell. I'm …