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Good one!!
Thanks for liking! ❤
9t-t/9=20⇔81t-t=80t=20*9⇔t=20*9/80=9/4=9^x. 9/4=9*¼=(9^1)*(4^(-1))⇒9^(x-1)=4^(-1)=(9^(log₉4))^(-1)=9^(-log₉4)⇒x-1=-log₉4⇒x=log₉4+1. log₉4=log(3²;2²)=log₃2=1/lb3. x=1+1/lb3.
Very nice! ❤
9^×)(9-1/9)=20=>9^×=(20/80)(9)=9/4=>×.Log 9=log9-log4=>×=1-1/log@4 (9)
I can’t help thinking that steps could be saved by changing 9^(x+1)-9(x-1) =20 to(9^x*9)-(9^x*1/9)=20and factoring out 9^x from both terms.
Yes, you are right! ❤
Good one!!
Thanks for liking! ❤
9t-t/9=20⇔81t-t=80t=20*9⇔t=20*9/80=9/4=9^x. 9/4=9*¼=(9^1)*(4^(-1))⇒9^(x-1)=4^(-1)=(9^(log₉4))^(-1)=9^(-log₉4)⇒x-1=-log₉4⇒x=log₉4+1. log₉4=log(3²;2²)=log₃2=1/lb3. x=1+1/lb3.
Very nice! ❤
9^×)(9-1/9)=20
=>9^×=(20/80)(9)=9/4
=>×.Log 9=log9-log4
=>×=1-1/log@4 (9)
Very nice! ❤
I can’t help thinking that steps could be saved by changing
9^(x+1)-9(x-1) =20 to
(9^x*9)-(9^x*1/9)=20
and factoring out 9^x from both terms.
Yes, you are right! ❤