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 ( 17+ )
Otras preguntas
1.) What role do stomata play in photosynthesis? 2.) Describe the process of pollination in angiosperms.
write 7340 in standard for
Look below for question:
What feature of Japan made it difficult to unify and govern? Many different religions Diverse and numerous immigrants Lacking communication with other nations C
Jared is putting a new deck off the kitchen. The deck will be 94.45 inches deep. He will use 16 boards that are each 5.7 inches wide. He has to leave a small
Jackie buys a basket for $6, 2 pounds of apples for $3.50 per pound, and 2 pounds of oranges for $3.50 each per pound. The tax for the whole purchase is $1.
Why do you think it is so difficult for some people to accept the idea of continental drift?
Could someone who knows french help me write a past holiday paragraph??
PLEASE HELP I GIVE THANKS
Jerome is writing a number in scientific notation. The number is greater than one million and less than ten million. What will be the exponent in the number Jer
