alyvia alyvia
  • 03-04-2017
  • Mathematics
contestada

. Solve (cos x)(cos 2x) = 0 for the interval [0, ππ]
x = π/3, x = π/2
x = π/3, x = π/4, x = π/6
x = π/4, x = π/2, x = 3π/4
x = 3 π/4, x = π

Respuesta :

ghanami
ghanami ghanami
  • 06-04-2017
hello :
(cos x)(cos 2x) = 0

(cos x= 0)0r(cos 2x =0) 
sur :  [0, π] 
1) cos x= 0  : x = π/2 
2 ) cos 2x =0 : x = π/4 or x=3π/4
conclusion : x = π/4, x = π/2, x = 3π/4
Answer Link

Otras preguntas

When 40 is added to the number of miles Karen ran last week, the result is the same as adding 10 to 4 times the number of miles she ran last week. How many mile
What are some methods used by Mussolini to rise to power?
Sophia bought 3 yards of trim to put around a rectangular scarf. She wants the width of the scarf to be a whole number that is at least 6 inches and at most 12
how do you say theatre in Spanish
How much money, in dollars, does one mole of nickels represent?
Susan ........ (Run) to school because she was late.
Susan ........ (Run) to school because she was late.
What is the difference between "Herr" and "Herrn"?
what is the lcd of 10/11,29/44
Jimmy pays $2.93 for each gallon of gas. Which table best represents the relationship between g, the number of gallons purchased, and m, the amount he pays for