analearLurk
analearLurk
24-11-2016
Mathematics
contestada
Solve sin2x + 4sin x + 3 = 0
Respuesta :
HomertheGenius
HomertheGenius
25-11-2016
sin² x + 4 sin x + 3 = 0
Substitution: u = sin x
u² + 4 u + 3 = 0
u² + 3 u + u + 3 = 0
u ( u + 3 ) + ( u + 3 ) = 0
( u + 3 ) ( u + 1 ) = 0
u = - 3, u = - 1;
sin x = - 3 ( false )
sin x = - 1
Answer:
x = 3 π / 2 + 2 k π
, k ∈ Z
Answer Link
VER TODAS LAS RESPUESTAS ( 68+ )
Otras preguntas
explain the formation and breakdown of polymers?
Cell phones, the internet, and knowledge of major world events are __________? A. Celebrated. B. Ignored. C. Forbidden.
What was Robert Andrews Millikan atomic model??? and plz explain And if he has Explanation and definition of the models.
What is the value of the product (3-2i)(3 + 2i)? O 5 O 9 + 4i O 9–4i o 13
Compare and contrast DNA and RNA in terms of structure and nitrogenous bases.
Need help with both shown questions! Tysm!!
Question 3 of 10 Dinobryon is a species of protozoa that reproduce asexually. How can this asexual reproduction be harmful to the species? A. Their population d
if you could start a business which type would you pick and why
It is best to say that restoring and protecting estuaries and wetlands _______. a. helps prevent pollution in coastal waterways b. results in higher juvenile fi
Directions: Summarize or paraphrase the text from the article. 1. Like all Native American tribes, the Choctaw have an oral storytelling tradition going back ge