Calcule:
a) 2−1

b) 4−1

c) ( 3/2)^-1

d) (−5)^-2

e) −(−2)^-3

f) − (− 2/3 )^-3

g) − (− 1/2 )^-4

Resolva as equações exponenciais
3√2^x=1/16