Question

Aceste exerciții.Vă mulțumesc!​

Answer 1

Răspuns:

17

a)

log(2)8 = log(2)2³=3log(2)2=3•1=3

log(3)9=log(3)3²=2log(3)3=2•1=2

log(5)✓5= log(5)5^1/2=

= 1/2 • log(5)5=1/2•1=1/2

log(2)8•log(3)9•log(5)✓5=

=3•2•1/2=3

b)

log(2)8✓2=log(2)✓64•2=log(2)✓2⁷=

=log(2)2^7/2=7/2 •log(2)2=7/2

log(3)3✓3=log(3)✓3³=

=log(3)3^3/2=3/2log(3)=3/2

log(2)8✓2-log(3)3✓3=7/2-3/2=4/2=2