Math

function y = 4-2(2t+pi/2), where t is measured in radians.
A.choose one option which gives the value of the function when t=pi radians
B.choose one option which gives the period of the function in radians.

a)0 b)1 c)2 d)4 e)pi/4 f)pi/2 g)pi h)2pi

  1. 0
  2. 2
asked by Dave
  1. A, Just plug in pi for t and recompute y
    y = 4 - 2[(5/2)pi] = 4 - 5 pi

    B. The coefficient of t, which is 4 in this case (ignore the - sign), equals 2 pi f t, there f is the frequency.
    Therefore 2 pi f = 4
    f = 2/pi
    and P = 1/f = pi/2

    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Trigonometry

    function y=4-2sin(2t+pi/2), where t is measured in radians. choose one option which gives the value of the function when t=pi radians. a)0 b)1 c)2 d)4 e)pi/4 e)pi/4 f)pi/2 g)pi h)2pi
  2. math

    A lottery offers two options for the prize. (7) Option A: $1000 a week for life. Option B: $600 000 in one lump sum. If you choose Option B, you have the opportunity to place the winnings into an investment that also makes regular
  3. math ( Discrete Functions)

    lottery offers two options for the prize. (7) Option A: $1000 a week for life. Option B: $600 000 in one lump sum. If you choose Option B, you have the opportunity to place the winnings into an investment that also makes regular
  4. maths

    choose one option which is the equivalent in radians of an angle of 135 degrees. ( ð = pie 3.14...) A. ð / 2 B. 3ð / 2 C. 7ð / 8 D. 5ð / 4 E. 3ð / 4 F. 5ð / 8 da answer is E, Simply because with radians, pie iz treated as
  5. Math

    Consider Mr. Smith has an apple orchard. He hires his daughter, Lucy, to pick apples and offers her two payment options: Option A: $1.50 per bushel of apples picked Option B: 1¢ cent for picking one bushel, 3¢ cents for picking
  6. maths

    the function y = 5 + 3 sin (pie t /3 + pie /2) choose one option which gives the value of the funtion when t = 3. choose the option which gives the period of the function. from the options below. 0, 1/6, pie/6, 2, 3, pie, 5, 6 wod
  7. maths

    the function y = 5 + 3 sin (pie t /3 + pie /2) choose one option which gives the value of the funtion when t = 3. choose the option which gives the period of the function. from the options below. 0, 1/6, pie/6, 2, 3, pie, 5, 6 wod
  8. math

    6. A lottery offers two options for the prize. Option A: $1000 a week for life Option B: $ 600 000 in one lump sum. The current expected rate of return for large investment is 7%/a, compounded weekly. a. Which option would the
  9. algerbra

    Belinda wants to invest $1000. The table below shows the value of her investment under two different options for two different years: Number of years 1 2 3 Option 1 (amount in dollars) 1300 1600 1900 Option 2 (amount in dollars)
  10. Finance

    You are considering two lottery payment options: Option A pays $10,000 today and Option B pays $20,000 at the end of ten years. Assume youc an earn 6 percent on your savings. Which option will you choose if you base your decision

More Similar Questions