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 ( 32+ )
Otras preguntas
What have the courts ruled about quotas as a part of affirmative action programs?
Without multiplying, determine the sign of the product (356,864)(−194,758). (5 points)
megan hughes deposits $2300 in an account that pays simple interest. when she withdraws her money 8 months later, she receives $2484.00. what rate of interest
what is the largest value you can represent using 256 bit signed integer?
The ends of a pipe when measured with a tape measure that has marks every millimeter are exactly at the 0 mark and the 15 meter mark. how would you record this
What is x if 9x -3 = 78 Please Explain!
I need help with number 4 please help
one requirement of the business records exception to the hearsay rule is that the
The distance between bases on a baseball diamond (a perfect square) is 90 feet and the pitchers mound is one-half the distance between home and second base. If
megan hughes deposits $2300 in an account that pays simple interest. when she withdraws her money 8 months later, she receives $2484.00. what rate of interest
