a)se log16 N= -1/2, o valor de 4N é? b) o numero real x, tal que log s (9/4)= 1/2, é?

Comments

• arthur-white_60b5c44a5912e

  June 2021

  log 16N=-1/2

  10^-1/2=16N

  16N=1/10^1/2

  16N=1/V10

  16N=V10/10

  4N=(v10/10)/4

  4N=V10/40

  b)

  log(base x)(9/4)=1/2

  x^1/2=9/4

  (x^1/2)²=(9/4)²

  x=81/16
• -luca

  June 2021

  log16 N = -1/2

  N = 16^(-1/2)

  N = 1/ 16(1/2)

  N = 1/ √16

  N = 1/4

  Logo 4N = 4(1/4)

  4N = 4/4

  4N = 1

  logS 9/4 = 1/2

  S^1/2 = 9/4

  √S = 9/4

  (√S)² = (9/4)²

  S = 81/16