Texas Instruments TI-89 User Manual - Page 803

Cycle CATALOG Cycle Transfers program control immediately to the next iteration of the current loop (For, While, or Loop). Cycle is not allowed outside the three looping structures (For, While, or Loop). Program listing: :¦ Sum the integers from 1 to 100 skipping 50. :0! temp :For i,1,100,1 :If i=50 :Cycle :temp+i! temp :EndFor :Disp temp Contents of temp after execution:5000 CyclePic CATALOG CyclePic picNameString, n [, [wait] , [cycles], [direction]] 1. Save three pics named pic1, pic2, and pic3. Displays all the PIC variables specified and at the 2. Enter: CyclePic "pic",3,.5,4,ë1 specified interval. The user has optional control 3. The three pictures (3) will be displayed over the time between pictures, the number of times to cycle through the pictures, and the direction to go, circular or forward and backwards. automatically-one-half second (.5) between pictures, for four cycles (4), and forward and backwards (ë1). direction is 1 for circular or ë 1 for forward and backwards. Default = 1. 4Cylind MATH/Matrix/Vector ops menu vector 4Cylind Displays the row or column vector in cylindrical form [r∠q, z]. vector must have exactly three elements. It can be either a row or a column. [2,2,3] 4Cylind ¸ [2ø ‡2 p4 3] cZeros( ) MATH/Algebra/Complex menu cZeros(expression, var) ⇒ list Returns a list of candidate real and non-real values of var that make expression=0. cZeros() does this by computing exp8list(cSolve(expression=0,var),var). Otherwise, cZeros() is similar to zeros(). Note: See also cSolve(), solve(), and zeros(). Note: If expression is non-polynomial with functions such as abs(), angle(), conj(), real(), or imag(), you should place an underscore (¥ ) at the end of var. By default, a variable is treated as a real value. If you use var_ , the variable is treated as complex. You should also use var_ for any other variables in expression that might have unreal values. Otherwise, you may receive unexpected results. Display Digits mode in Fix 3: cZeros(x^5+4x^4+5x^3ì 6xì 3,x) ¸ {ë 2.125 ë.612 .965 ë 1.114 ì 1.073ø i ë 1.114 + 1.073ø i} z is treated as real: cZeros(conj(z)ì1ìi,z) ¸ z_ is treated as complex: cZeros(conj(z_)ì1ìi,z_) ¸ {1+i} {1ìi} cZeros({expression1, expression2 varOrGuess1,varOrGuess2 matrix Returns candidate positions where the expressions are zero simultaneously. Each varOrGuess specifies an unknown whose value you seek. Appendix A: Functions and Instructions 803