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Text File | 2000-04-02 | 3.3 KB | 337 lines

>10.Simultaneous equations. (On-screen keyboard) -2x-2(x+y)-1=0Äx-/Ø3±≤4±y=0 MYSZEK 2xy EXAMPLE e t101 p10 t0 zr t1 p5 t0 v500 zrm k- t2 p3 t0 k- t4 p4 t0 k-m kC t6 p4 t0 kCm c2m cxm k-m c2m kN t8 p4 t0 kNm n(m cxm k+m cym n)m k-m c1m k=m c0m ki t10 p5 t0 kim cxm k-m k/m kS t12 p4 t0 kSm sgm c3m sdm c4m spm cym k=m c0m ke t14 p6 t0 kem p10 oxm sp t16 p6 t0 spm kb kbm2 sl slm2 kb kbm k= k=m ss t18 p6 t0 ss t20 p5 t0 ssm sem ssm kc t24 p5 t0 kcm sg t26 p5 t0 sgm sl t28 p8 t0 slm8 kx t30 p4 t0 kxm kv t32 p4 t0 kvm slm5 kb p1 kbm kv p1 kvm sl t34 p8 t0 slm2 k*m ke t36 p3 t0 kem p10 oxm sp t38 p6 t0 spm4 k*m kxm spm2 kxm k-m c2m slm3 ssm shm spm ssm kxm c3m slm ssm spm4 ssm kxm c5m spm kxm ke t36 p3 t0 kem p10 oxm se t40 p5 t0 sem kbm2 slm kbm k=m slm2 kbm2 sem kbm k-m k/m sgm c1m sdm c5m ke t36 p3 t0 kem p10 oxm v1000 sp t42 p8 t0 spm ssm slm2 ssm kcm ;sd ;t44 ;p5 ;t0 sdm2 kbm k*m n(m kvm n)m sl t46 p6 t0 slm6 k-m sdm kxm c2m c0m spm ssm sem ssm kxm ;ke ;t54 ;p5 ;t0 ;kem ;p10 ;oxm kV t48 p5 t0 kVm p10 oxm t50 p8 t0 sUm p1 sUm p1 sUm p1 sUm p1 kS t52 p4 t0 kSm kC kCm kN kNm ze t102 p10 zxm zem e q BLURB 1`We are going to solve simultaneous equations. 2`We open the &Equations& window and write the problem. 4`#To "enter and solve" the problem 4`#we use the on-screen keyboard. 6`#We click on the button to open the &Letters and digits& panel. 8`We open the &Brackets& panel. 10`To create a new line we use the &Insert& button. 12`We open the panel with arrows. 14`After formulating the problem we press &ENTER&. 16`We evaluate the variable "$x$" from the second equation. 18`#We now substitute the value for "$x$" into the first equation. 20`We mark the block (&Shift&+&End&) ... 24`#and copy the block to the clipboard 24`#(press the on-screen button or &Ctrl&+&Ins& keys). 26`#We move the cursor to the first equation (&up& arrow). 28`#We replace "$x"$ by the value from the clipboard. 30`#We delete "$x"$ ... 32`#and paste from the clipboard 32`#(press the on-screen button or &Shift&+&Ins& keys). 34`#We have to write "$*"$ between 34`#"$2"$ and the fraction since 34`#"$2x=2*x"$. 36`We press &ENTER& to check the solution. 38`We transform the first equation. 40`We evaluate the variable "$y$". 42`#We now substitute the value for "$y$" into the second equation. 44`#We move the cursor to the second equation (&down& arrow). 46`We transform the second equation. 48`#This result can be accepted as the final answer. 48`#We press the &Answer& button. ;48`#We press "&ENTER&" ;48`#&without making any changes& in the expression. 50`Now we can look through all the transformations. 52`#We close the panels. 54`We press &ENTER& again. 101`#We show how to use 2xy. 101``#"The presentation proceeds automatically." 101``#To move yellow panels use the mouse. 101`#Press ENTER on the KEYBOARD to continue. 102`#In a moment the &Examples& window will appear. 102`You can watch the same presentation again, or 102`#load the next example, or 102`#close the window and solve your own problem.