Type a formula, tap constants from the library, set your values and units, then compute. The live preview shows your equation in proper mathematical notation as you build it.
* for multiplication: write G*M*m, not GMm.^ for powers: r^2 means r squared./, wrap the whole denominator in brackets: 1/(4*pi*eps0) puts everything in brackets below the line.6*10^-7 or 6e-7 — both mean 6×10⁻⁷.sqrt(2*G*M/r), sin(x), ln(x).=: e.g. F = G*M*m/r^2 so the answer is labelled F.