jhernandez5167
jhernandez5167
02-02-2015
Mathematics
contestada
solve for x
log(x–4)+log(x+3)=2logx
Respuesta :
konrad509
konrad509
02-02-2015
[tex]D:x-4>0 \wedge x+3>0 \wedge x>0\\ D:x>4 \wedge x>-3 \wedge x>0\\ D:x>4\\\\ \log(x-4)+\log(x+3)=2\log x\\ \log(x-4)(x+3)=\log x^2\\ (x-4)(x+3)=x^2\\ x^2+3x-4x-12=x^2\\ -x=12\\ x=-12\\ -12\not\in D\\ \Downarrow\\ \boxed{x\in\emptyset}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 92+ )
Otras preguntas
What is a disadvantage of wind?
Writing Equations of Parallel Lines y 10 What is the slope of the line that is parallel to the given line and passes through the given point? 8 6 What is the eq
ll of these are important functions of iron EXCEPT _______. a. aids in enzymatic activity for energy metabolism b. prevents anemia c. acts as a buffer d. transp
Interest Rates) Well-known financial writer Andrew Tobias argues that he can earn 177 percent per year buying wine by the case. Specifically, he assumes that he
Find the value of f(-6).
Mountaintop removal mining exposes rock that _______ heavy metals and other toxic chemicals into the environment.
A japanese ink painting titled Winter Landscape by Sesshu Toyo.How does the artist create a cold feeling in the painting above?
Which step of the critical thinking process determines the main idea to be understood in order for the information or data to make sense? A-implication B-purpos
What is the solution to the inequality x(x - 3) > 0? OA) xs O and x > 3 OB) xs O or x3 OC) 0 OD) x<0 or x> 3
Read the scenario, then answer the questions. A 2 kg ball is thrown upward with a velocity of 15 m/s. What is the kinetic energy of the ball as it is being thro
