Y=ln(ln(x))
y'=(1/x)/Ln(x)=1/xln(x)
No circumference of a circle is very easy to me
BD is right but PA is wrong, would be BD and MK.
9,500 just add the 0 always add 0 if you multiply by 10. 00 for 100 and 000 for 1000
X=1, y=-2--------------------------
