Question

Resolva as equações exponencial 2^x+4=16

Answer 1

2^x + 4 = 16 

2^x = 16 - 4

2^x = 12

2^x = 2² * 3

ln(2^x) = ln(2²*3) ⇒ aplicando logaritmo fica

x ln2 = ln12

x = ln12 / ln2

x = 2,484 / 0,693

x = 3,584

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02/12/2015
Sepauto - SSRC
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