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

Otras preguntas

Please can you give me help with #1-#2.Thanks.

Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.

Every parent should respect __ children's feelings.

Most health education services are conducted by the

How did Crusoe escape from slavery after the second voyage?

Which is the next logical step in balancing the given equation? N2 + O2 → NO2 Place the coefficient 2 in front of oxygen and nitrogen dioxide. Place the coeffi

Strong muscles, tendons, and ligaments are more likely to give away under stress and are more likely to get injured. True or False?

Each one of the following sentences contains a clause. in which sentence is the clause used as an adverb? a. what you really need is a back massage. b. all of

According to marx and engels, establishing a society based on cooperation and equal distribution of wealth would require a. an energy crisis. b. the developme

the meaning of empirical formula