Elimination (CAS,ALGEBRA mode) Assigns an expression to a variable. [F3](EQUA)[6](elim) elimination( equation1 , var , equation2 [ ) ] elimination( inequality , var , equation [ ) ] 1. To transform Y=2X+3 to X= and then substitute 2X+3Y=5. [F3](EQUA)[6](elim)[2][X][+][3] [ALPHA][Y][SHIFT][=] [5][,][X][,][ALPHA][Y] [SHIFT][=][2][X][+][3][EXE] 2. eliminate( 2X+3Y=5, X, Y=2X+3 ) 4Y-3=5 3. eliminate( 5X+6Y > 8, Y, 2X+5Y=3 ) 13X/5 + 18/5 > 8

Equation (CAS,ALGEBRA,TUTOR mode) Recalls eqn memory contents. [F4](eqn) eqn( number of equation [ ) ] 1. To simplify 2X^2+X-3Y+4Y+1=-X^2+3X+Y-5 [F1](TRNS)[6](smplfy) [2][X][X^2][+][X] [-][3][ALPHA][Y][+][4] [ALPHA][Y][+][1] [SHIFT][=][(-)][X] [X^2][+][3][X][+] [ALPHA][Y][-][5][EXE] [F3](EQUA)[4](rewrit) [F4](eqn)[1][EXE] 2. When "3X-2Y=5" is labeled as eqn(3);     eqn( 3 ) 3X-2Y=5 3. When "5X-3>7Y" is labeled as eqn(19);     eqn( 19 ) 5X-3>7Y 4. When "X2-3X-54=0" is labeled as eqn(25);     eqn( 25 ) X2-3X-54=0

	Exchange (CAS,ALGEBRA,TUTOR mode) Exchanges the right-side and left side elements. CAS,ALGEBRA; [F3](EQUA)[5](exchng) TUTOR; [F2](EQUA)[3](exchng) exchange( equation [ ) ] exchange( inequality [ ) ] 1. Exchange the left-side and right-side elements of 2X + 3Y = 5X - 1 [F3](EQUA)[5](exchng)[2][X][+][3] [ALPHA][Y][SHIFT][=] [5][X][-][1][EXE] 2. exchange( 3 > 5X - 2Y ) 5X - 2Y < 3

	Expansion (CAS,ALGEBRA,TUTOR mode) Expands an expression. CAS; [F1](TRNS)[1](expand) ALGEBRA,TUTOR; [F1](TRNS)[2](expand) expand( expression [ ) ] expand( equation [ ) ] expand( inequality [ ) ] 1. To expand (X-1)^5 [F1](TRNS)[1](expand) [(][X][-][1][)][^][5][EXE] 2. expand( (X+A)(X+B) ) X2+AX+AB+BX 3. expand( (A+B)2 ) A2+2AB+B2 4. expand( (1+X) (3(1+X) + 1/(1+X) ) 3X+4

	Exponential form to Trigonometric / Hyperbolic form(CAS mode) Converts an exponential function to a trigonometric or hyperbolic function. [F1](TRNS)[5](TRIG)[4](expToT) expToTrig( expression [ ) ] 1. To convert e^(iX) to a trigonometric function.(Angle:Rad) [F1](TRNS)[5](TRIG)[4](expToT) [SHIFT][e^x][(][SHIFT][i][X][EXE] 2. expToTrig( (eX + 1) ) (cosh(X) + sinh(X) + 1)

Expression collecting (CAS,ALGEBRA,TUTOR mode) Rearranges an expression,focusing on a paticular variable. CAS; [F1](TRNS)[8](collct) ALGEBRA; [F1](TRNS)[7](collct) TUTOR; [F1](TRNS)[4](collct) collect( expression [ , var ] [ ) ] collect( expression , expression [ ) ] collect( equation [ , var ] [ ) ] collect( equation , expression [ ) ] collect( inequality [ , var ] [ ) ] collect( inequality , expression [ ) ] 1. To rearrange X^3-3X+2,focusing on (X-2) [F1](TRNS)[8](collct) [X][^][3][-][3][X] [+][2][,][X][-][2][EXE] 2. collect( (CX+AX2+BX2+C+AX), X ) (A+B)X2+(A+C)X+C 3. collect( AB+BC+CA, C ) AB + C(A+B) 4. collect( X2+6X-7, X+3 ) (X+3)2 - 16 5. collect( X2-2X+9=0, X-1 ) (X-1)2 +8 = 0 6. collect( X2+(1/2)X-1=0, X+1/4 ) (X+1/4)2 - 17/16 = 0 7. collect( X2+3X+2>0, X+3/2 ) (X+3/2)2 - 1/4>0

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