Posted by yeahyeah on Saturday, July 14, 2012 at 6:34am.
13. What is the equation of a cosine function with amplitude 3, transition point (−1, 1), and period p?
A. y = p cos [3(x − 1)] − 1
B. y = 3 cos [2(x − 1)] + 1
C. y = 3 cos [p (x + 1)] − 1
D. y = 3 cos [2(x + 1)] + 1
16. What is the transition point of y = 100 tan (6x) + 4?
A. (0, −4)
B. (6, −4)
C. (0, 4)
D. (6, 4)
20. cotâ€“1 −0.57735 is approximately
A. −1.05.
B. 2.09.
C. −0.65.
D. 2.62.

Math Trig  Steve, Saturday, July 14, 2012 at 12:05pm
13.
amplitude 3: 3cos(...)
period p: 3cos(2pi(...)/p) ...
translate by (1,1): 3cos(2pi(x+1)/p) + 1
So, it appears to be (D), if by p you mean pi.
16: (0,4): (C)
20: (A)
Your use of transition point appears unusual. In #13 the only possible interpretation, given the answer choices, is to use (1,1) as coordinate translation. Yet transition points are usually max/min or inflection points. Using that same logic gives me (C) on #16.
Answer This Question
Related Questions
 biology  Given the part of the molecule shown below, can the underlined atom ...
 calculus  Find an equation for the surface consisting of all points P(x, y, z) ...
 Grade 12 Calculus  Evaluate each of the following. Show all your calculations. ...
 calculus (gr 12)  Evaluate each of the following. Show all your calculations. a...
 calculus (gr 12)  Evaluate each of the following. Show all your calculations. a...
 math  Consider the following 6 relations on the set of real numbers: A) y=2x&#...
 Calculus  (a) By graphing the function f(x) = (cos 2x − cos x)/x2 and ...
 Calculus  (a) By graphing the function f(x) = (cos 2x − cos x)/x2 and ...
 trig  Find the exact value of the trigonometric function given that sin u = &#...
 maths  Choose the option that gives an expression for the indefinite integral...
More Related Questions