Wartość wyrażenia log2 16+log3 27 równy jest:
A. log3 43
B. 7
C. 5
D.log6 432
log₂16 = log₂2⁴ = 4
log₃27 = log₃3³ = 3
4 + 3 = 7
Odpowiedź B
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Feci, quod potui, faciant meliora potentes
Pozdrawiam :)
log 2 16 =x
2^x = 16
2^x = 2^4
x=4
log 3 27 =x
3^x =27
3^x =3^3
x=3
więc:
4 + 3 =7 odp.b
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log₂16 = log₂2⁴ = 4
log₃27 = log₃3³ = 3
4 + 3 = 7
Odpowiedź B
----------------------------------------------------------------------------------------------------------
Feci, quod potui, faciant meliora potentes
Pozdrawiam :)
log 2 16 =x
2^x = 16
2^x = 2^4
x=4
log 3 27 =x
3^x =27
3^x =3^3
x=3
więc:
4 + 3 =7 odp.b