you can find them on the internet or in a book
I know it is something to do with maths I think it is sums.
maths is not happy because sometimes the sums can be hard.
the S I unit of inductance can be written as
well some people use coculateors or other use there fingers.
Maths was miley cyrus's is worst failure because she was never good at sums
1/x+a+b =1/x+1/a+1/b ---- ---- ---- ----
because,the math work book has so much problem sums.
Biology- to find out about the human body. Chemistry- medicine Maths- Sums