Oratoria

MATEMATICAS

NOMBRE: JOSUE ASENCIO FIGUEROA
CURSO: 5to QUIBIO


1.1) 2X . 32 x - 4 =64 1.2) 7 2X – 1 = 5 X + 3
2x. (25) x – 4 = 64 log 7 2 x – 1 = log 5 x + 3
2x . 25 x – 20 = 64 (2 x– 1 ) log 7 = ( x + 3 ) log 5
2 6x - 20 = 26 2 x log 7 – log 7 = x log 5 + 3 log 5
6x – 20 = 62 x log 7 – x log 5 = 3 log 5 + log 7
6 x = 6 + 20 x ( 2 log 7 – log 5 )= 3 log 5 + log 7
6 x = 26

X = 26x = log 7 3 log 5
6 2log 7 log 5
X= 1.26289249 R//.

X= 13
3 R//.





1.3) 3 2 X = 10 ( 3 X ) = - 9
( 3 X 2 – 10 (3 X )= - 9
3 X = y 3 X = 9 3 X = 1
y2 – 10 y + 9 = 0 3 X = 3 2 log 3 X = log 1
( y –9 ) ( y – 1 ) = 0 x = 2 x log 3 = log 1
y - 9 = 0 y – 1 = 0
y = 9 y = 1 x=log 1
log 3
X= 0 R//.

2.1) 5 log 4 X - log 4 x 3 = 4
log 4 X...