Proofs: Logarithm - Clues for Understanding

[Abukadu]

Got no clue .. need some clues

 

[Abukadu]

ok i figured out 1.. bu still no clue as to .2 !

 

[HallsofIvy]

How can you expect people to help you if you don't tell them what the problem is?

In your pdf attachment (7) says "log_a x^y= y log_a x". That is an equation, not a "problem". What are you to do with the that equation?

(2) says "$x\in [-1, 1] cos(arcsin x)= sin(arccos x)"<br /> Again, that is an equation. What are you to do with it.$

 

[Abukadu]

I had to prove the equation, but I figured it out.

Same for 2, I need to prove the equation and not just asume that it exists!
That one I couldn't prove..

 

[jozef]

Number 1 was just the power rule. Number 2 I don't know either sorry.