- #36
teme92
- 185
- 2
Ah there's still the ##dx## left:
##\frac{a}{2}+\frac{a}{2}=a##, therefore ##A=\frac{1}{a}##
##\frac{a}{2}+\frac{a}{2}=a##, therefore ##A=\frac{1}{a}##