Beräkna det (positiva) volymen av parallellepipeden med sidorna:
$$ \vec v_1 = (1,4,-3), \quad \vec v_2 = (1,-2,-2), \quad \textrm{och} \quad \vec v_3 = (-3,0,4). $$
Obs: Figuren är inte gjord enligt de skrivna koordinater, men det går att ändra 3 av punkterna med musen.
Typing functional expressions
Functional expressions are largely written as by hand. Functions must
be written with parentheses: i.e. sin(x), not sin x.
sqrt(x) exp(x)abs(x)
Exponents are written using ^: e.g. $2^{x+y}$ is wrtten as 2^(x+y).
Place parentheses where needed: $\dfrac{x+y}{1+x}$ is written as (x+y)/(1+x)
Multiplication sign may but do not have to be explicitly written out:
$x\cdot y$ may be written as xy or x*y.