## 630 Reputation

19 years, 285 days

## Another method...

Try > convert(632096185,base,1000); You get [185, 96, 632]

## unapply...

unapply is the inverse of apply. If you apply the function named cos to Pi/2 you get cos(Pi/2), which happens to be 0. cos(Pi/2)=0. Likewise, if you apply the function cos to x you get cos(x). So unapply(cos(x),x) gives you the cos function. unapply takes an expression, say in the variable x, and turns it into a function. Lots of times people confuse f(x) with f. The first is an low-life "expression" while the second is a more dignified, abstract thing called a function. Note that t^2 and x^2 are different expressions, but unapply(t^2,t) and unapply(x^2,x) are equal functions. You might enjoy a Google search using key words Church lambda calculus. Alonzo Church developed something called the lambda calculus. He would write something like lambda x(cos(x))=cos Or lambda x(x^2) is the same as the Maple proc x->x^2. Church's lambda abstraction operator is the same as Maple's unapply.

## Time to solve...

It would also be nice if Maple could tell us how long it will take to solve the Riemann hypothesis. Or if a Turing machine will halt.
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