Shakawaldgi
Shakawaldgi
02-09-2016
Mathematics
contestada
sec^2x+2sec=0. solve the equation for 0
Respuesta :
HomertheGenius
HomertheGenius
10-09-2016
u = sec x ( substitution )
u² + 2 u = 0
u ( u + 2 ) = 0
u = 0, or u = - 2
1/cos x = 0 1/cos x = - 2
(not accepted ) cos x = -1/2
x 1 = 2π/3, x 2 = 4π/3
Answer Link
VER TODAS LAS RESPUESTAS ( 75+ )
Otras preguntas
Can anyone log into my clever and do my work for me?
What is the value of x? Enter your answer in the box. x =
A parallel-plate capacitor is charged by a 14.0 V battery, then the battery is removed. You may want to review (Pages 692 - 695) . Part A What is the potential
Union Local School District has bonds outstanding with a coupon rate of 2.9 percent paid semiannually and 24 years to maturity. The yield to maturity on these b
81. What is the next number? 1, 1/2, 1/4, 1/8,
Which expressions are equivalent to -9(2/3x + 1)? Check all that apply. A. -9(2/3x)+9(1) B. -9(2/3x)-9(1) C. -9(2/3x)+1 D. -6x + 1 E. -6x + 9 F. -6x - 9 I WILL
evaluate 1/x^-2 for x=7
(5. From the age distribution, if a country has more workforce that fall between56 years and above, what are the likely economic effect on such a country?
During which kind of situation might a person be most likely to yield to the effects of informational social influence? a) when they have no personal investment
Read the excerpt from "The Most Dangerous Game,” by Richard Connell. "Rainsford," called the general, "if you are within sound of my voice, as I suppose you are
