Hey guys, having trouble grasping logs at the moment...very basic stuff! Just wondering how you'd use a calculator to find * when 10*=40?

Question

anonymous · Answer

*= 4 since, $ 10 \times 4 = 40 $

anonymous · Answer

sorry its 10 to the power of 4...I couldnt find a symbol to make it clear on the computer!

anonymous · Answer

Alight so, you want to solve for $ x $  in $  10^x=4 $, isn't ?

anonymous · Answer

exactly!

anonymous · Answer

Okay so, $ 10^x =4 \implies x = \log_{10} 4 \approx 0.602 $ Here is a cool website that you would use: http://www.wolframalpha.com/input/?i=Log%5B10%2C4%5D

anonymous · Answer

Thats great, thanks so much!! :)

anonymous · Answer

Glad to help :-)

anonymous · Answer

hi every body i waant to know that what is active and passive elements in elctronics circuits?