HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 261

Symbolic-view variables Angle All Aplets F1...F9, F0 Function X1, Y1...X9,Y9 X0,Y0 Parametric R1...R9, R0 Polar U1...U9, U0 Sequence E1...E9, E0 Solve Sets the angle mode. From Symbolic Setup, choose Degrees, Radians, or Grads for angle measure. or In a program, type 1 Angle -for Degrees. 2 Angle -for Radians. 3 Angle-for Grads. Can contain any expression. Independent variable is X. Example 'SIN(X)' F1(X) You must put single quotes around an expression to keep it from being evaluated before it is stored. Use CHARS to type the single quote mark. Can contain any expression. Independent variable is T. Example 'SIN(4*T)' Y1(T):'2*SIN(6*T)' X1(T) Can contain any expression. Independent variable is θ. Example '2*SIN(2*θ)' R1(θ) Can contain any expression. Independent variable is N. Example RECURSE (U,U(N-1)*N,1,2) U1(N) Can contain any equation or expression. Independent variable is selected by highlighting it in Numeric View. Example 'X+Y*X-2=Y' E1 Programming 18-39