# calc

posted by .

Average daily temp,y, is
y=45-23cos(2pi(x-32)/365), where x is time in days, x=1, corresponds to Jan 1 and y is temp in degrees F.
Determine the period of the function. Determine critical numbers, over one period.
Determine relative extrema, what does relative extrema represents

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### triginometry

hi i tried solving this problem but i get the second part wrong?
2. ### Chemistry

Sorry I have one other question that i'm unsure about. for the solution process of A (s)----> A (aq) the teacher demonstrates upon mixing A in H2O that the temp falls from 22 to 5 degrees C. The soluability of this solid is known …
3. ### Calc

Recent studies indicate that the average surface temp. of the earth has been rising steadily. Some scientists have modeled the temp. by the linear function T= 0.02t + 8.50, where T is temp. in degrees Celsius and t represents years …
4. ### Physics

At t = 0, a 785 g mass at rest on the end of a horizontal spring (k = 125 N/m) is struck by a hammer, which gives the mass an initial speed of 2.70 m/s. (a) Determine the period of the motion. T= .4979201367s Determine the frequency …
5. ### pre calc

in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best …
6. ### precalc

in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best …
7. ### math

f(x) = 64 + 27cos(2pi/365(x+145)) what would be the period i tried by solving 2pi/(2pi/365) period = 365 but this doesn't seem right
8. ### Please check my Calculus

1. Find all points of inflection: f(x)=1/12x^4-2x^2+15 A. (2, 0) B. (2, 0), (-2, 0) C. (0, 15) D. (2, 25/3), (-2, 25/3) E. none of these I got D. I found the second derivative and equaled it to 0 and solved for x. I plugged the x values …
9. ### math

One day at 3:00 am the temp was -13 degrees f in Kodiak Alaska. At 10:00 am the temp was 22 degrees f. What was the average change in temp per hour?
10. ### Calculus

Consider a differentiable function f having domain all positive real numbers, and for which it is known that f'(x)=(4-x)x^-3 for x>0. A. Find the x-coordinate of the critical point of f. Determine whether the point is a relative …

More Similar Questions