• Define a function, g, thus:

  The symbol shown is called theta

  Evaluate the function at 0, 2, 5, 0.5, and x+theta

  Then, unassign the function using either method.

> g:=theta->theta+sin(theta^2)/cos(theta)^2;

> g(0);

> g(2);

> g(5);

> g(0.5);

> g(x+theta);

> g:='g';

> g(x);

• Create a multi-variable function, p, and use it to compute (x + 2)(y + 5), (x + 8)(y + 0.5), and (x + 5)(y - 5).

  Note: You will have to use expand() in your function so Maple will multiply the polynomials.

> p:=(a,b)->expand((x+a)*(y+b));

> p(2,5);

> p(8,0.5);

> p(5,-5);

• For the following numbers, find sin(x), cos(x), and tan(x). Note: enter the trig functions exactly as you see them here.

  Pi, Pi/4, 2*Pi, and 128*Pi

> f:=x->sin(x),x->cos(x),x->tan(x);

> x(Pi);

> x(Pi/4);

> x(2*Pi);

> x(128*Pi);

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