home *** CD-ROM | disk | FTP | other *** search
- >7.Transformation of the rational expression. (Domain)
- /Øa-1±≤a^2≤-1±
- MYSZEK 2xy
- EXAMPLE
- e
- t101
- p10
- t0
- zp
- t1
- p5
- t0
- v400
- zpm
- k^
- t2
- p3
- t0
- k/m
- sgm
- cam
- k-m
- c1m
- sdm
- cam
- p1
- k^
- p1
- k^m
- p1
- c2m
- spm
- k-m
- c1m
- ke
- t3
- p6
- t0
- kem
- p10
- oxm
-
- slm2
- k?
- t13
- p7
- t0
- k?m
- p10
- oxm
- t4
- p4
- t0
- shm
- n(m
- cam
- k+m
- c1m
- n)m
- n(m
- spm
- sgm
- kxm
- sdm
- sem
- n)m
- ke
- t5
- p4
- t0
- kem
- p10
- oxm
-
- sd
- t6
- p4
- t0
- sdm
- kbm6
- shm
- kxm
- sgm
- kxm2
- ke
- t5
- p4
- t0
- kem
- p10
- oxm
-
- kd
- t7
- p8
- t0
- t8
- p6
- t0
- p1
- kdm
- cam
- k-m
- c1m
- k#m
- c0m
- ke
- t9
- p4
- t0
- kem
- p10
- oxm
-
- se
- t10
- p4
- t0
- sem
- kbm2
- slm
- kbm
- k#m
- ke
- t14
- p3
- t0
- kem
- p10
- oxm
-
- ke
- t11
- p3
- t0
- kem
- on
- p10
- onm
- p10
- oxm
-
- t12
- p8
- t0
-
- ze
- t102
- p12
- t0
- zxm
- zem
-
- e
- q
- BLURB
- 1`We are going to transform the expression:
- 1`#@/Øa-1±≤a^2≤-1±@.
- 2`We open the &Transformations& window and write the problem.
- 2`To write a fraction we use the &"/"& button, and to create an
- 2`exponent we press &Shift&+&6& or the on-screen button.
- 3`After formulating the problem we press &ENTER&.
- 13`#We can ask the program for a hint
- 13`#at the negative sign in the denominator.
- 4`We transform the denominator.
- 5`We press &ENTER& to check our transformations.
- 6`We cancel the fraction.
- 7`The program is right.
- 7`These expressions are not identical
- 7`because their &domains are different&.
- 7``The expression
- 7`#@/Øa-1±≤(a+1)(a-1)±@
- 7`is defined for`#"$a-1π0 Ÿ a+1π0"$.
- 7``And the expression
- 7`#@/Ø1±≤a+1±@
- 7`is defined for`#"$a+1π0"$.
- 8`#We add the condition:
- 8`#"$a-1π0"$
- 8`#to the domain.
- 8`#(Press &Shift&+&D& or the on-screen button)
- 9`Now we can press &ENTER& again.
- 10`We transform the domain condition.
- 14`We press &ENTER& again.
- ;11`We press the &Answer& button.
- 11`#This is the final result.
- 11`#We press "&ENTER&"
- 11`#&without making any changes& in the expression.
-
- 12`#The program reminded us about the second
- 12`#condition determinig the domain.
- 12`#We decided not to write it explicitly.
-
- 15`{wolny}
-
- 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.
-