Question

função exponencial
Calcule:

Answer 1

a) x = (-1/3)³ + [3^-1 - (- 3 )^-1]^-2
x = - 1 /27 + [ 1/3 - (- 1/3)^1]-^2
x = -1/27 + [1/3 - (-1/3)]^-2
x = -1/27 + [1/3 + 1/3]^-2
x = -1/27 + [2/3]^-2
x = -1/27 + [3/2]²
x = -1/27 + 9/4
m.m.c = 108
 x = -4/108 + 243/108
x = -239/108

 b)y = (2^-2 + 2 ² - 2^-1  ) / (2^-2 - 2^-1
y = (1/2)² + 4  - (1/2)² / (1/2)²  - (1/2)¹
y =( 1/4 + 4  - 1/4 ) / (1/4  - 1/2)
  m.m.c = 4
 y = ( 1/4 + 16/4 - 2/4) / ( 1/4 - 2/4)
y = 15/4  /   - 1/4
y = 15/4  *  -4/1
y = -60/4
y = - 15