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- >15.Equation. (Strict domain checking is selected)
- x(x+/Øx±≤x±)=0
- MYSZEK 2xy
- EXAMPLE
- e
- t101
- p10
- t0
- zr
- t1
- p6
- t0
- zrm
- t2
- p6
- t0
- cxm
- n(m
- cxm
- k+m
- k/m
- sgm
- cxm
- sdm
- cxm
- spm
- n)m
- k=m
- c0m
- zd
- t3
- p6
- t0
- zdm
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- p4
- t0
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- p10
- oxm
- v500
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- slm3
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- kbm
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- p10
- onm
- p10
- oxm
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- p4
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- t8
- p4
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- kdm
- cxm
- k#m
- c0m
- ke
- t9
- p4
- t0
- kem
- p10
- oxm
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- sdm
- t10
- p4
- t0
- shm
- spm
- k=m
- c0m
- com
- crm
- kxm
- spm
- kxm
- k=m
- k-m
- spm
- ssm
- sem
- ssm
- kxm
- ke
- t6
- p4
- t0
- kem
- p10
- oxm
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- shm
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- p6
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- p3
- t0
- ssm
- spm4
- ssm
- kxm
- t12
- p6
- t0
- sgm
- shm
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- k-m
- c1m
- t13
- p6
- t0
- shm
- ssm
- sem
- ssm
- kxm
- sdm
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- kV
- t20
- p3
- t0
- kVm
- p10
- oxm
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- t22
- p3
- t0
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- ze
- t102
- p10
- t0
- zxm
- zem
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- e
- q
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- BLURB
- 1`We are going to solve the equation:
- 1`#@x(x+/Øx±≤x±)=0@.
- 2`We open the &Equation& window and write the problem.
- 3`#We solve the equation when
- 3`#&strict domain checking& is selected.
- 3`#The mouse is pointing at the button to press.
- 4`As usual after formulating the problem we press &ENTER&.
- 5`#We cancel the fraction.
- 6`We press &ENTER& to check our solution.
- 7`#If &Strict domain checking& is anabled
- 7`#the program warns us when the domains are not identical.
- 7`#We have ignored the warning
- 7`#which caused an error in the solution.
- 8`#We add the condition:
- 8`#"$xπ0"$
- 8`#to the domain.
- 9`#We press &ENTER& again.
- 10`The equation has two solutions.
- 11`#The first solution
- 11`#&does not& satisfy the domain condition.
- 11`#That is why this condition is important.
- 14`We remove the first solution.
- 12`#We now substitute the value for "$x$"
- 12`#into the domain condition.
- 13`#The domain condition is an identity,
- 13`#so we can remove it.
- 20`#This is the final result.
- 20`#We press the &Answer& button.
- 22`Now the problem is solved.
-
- 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.
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