Question about Texas Instruments TI-89 Calculator

For expand, you don't need to put ",x" at the end.

just do: expand( (x-5)^3 )

and you should get: x^3-15x^2+75x-125

Posted on May 21, 2008

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Posted on Jan 02, 2017

The rate of change for the function y=5x+4 is the coefficient 5 that multiplies the independent variable x. For a unit variation of x (x varies by 1) y varies by 5 units.

Between x1=2 to x2=3, y varies from y1=5*2+4=14 to y2=5*3+4=19.

The rate of change is defined as

**(variation in y)/(variation in x)=(19-14)/(3-2)=5**

Between x1=2 to x2=3, y varies from y1=5*2+4=14 to y2=5*3+4=19.

The rate of change is defined as

Sep 28, 2014 | SoftMath Algebrator - Algebra Homework...

Start by using the distributive property to expand the term 5(I-31)=5*I-5*31=5*I-155.

Rewrite the equation as 5*I+5*I-155=55

Combine the terms with I, this yields 10*I-155=55

Add 155 to both sides of the equation 10*I-155+155=55+155

you now get 10*I=210

Divide both sides of the equation by 10

(10*I)/10=210/10

Cancel the 10's on the left and divide 210 by 10 to get 21

Thus I=21

Basically you use the priority order of operations BEDMAS backwards

Rewrite the equation as 5*I+5*I-155=55

Combine the terms with I, this yields 10*I-155=55

Add 155 to both sides of the equation 10*I-155+155=55+155

you now get 10*I=210

Divide both sides of the equation by 10

(10*I)/10=210/10

Cancel the 10's on the left and divide 210 by 10 to get 21

Thus I=21

Basically you use the priority order of operations BEDMAS backwards

Feb 13, 2013 | SoftMath Algebrator - Algebra Homework...

Use the definitions of the intercepts.

x-intercepts (or zeros or roots) are the values of the independent variables that make the function equal to zero. To obtain an intercept set y=0 in equation : 5x=-10, mean x=-10/5=-2

y-intercept: value of y when x=0.

Just set x=0 in equaltion and solve for y

-4y=-10, gives y=5/2

And Sorry, I cannot enter the answer in the drop box.

x-intercepts (or zeros or roots) are the values of the independent variables that make the function equal to zero. To obtain an intercept set y=0 in equation : 5x=-10, mean x=-10/5=-2

y-intercept: value of y when x=0.

Just set x=0 in equaltion and solve for y

-4y=-10, gives y=5/2

And Sorry, I cannot enter the answer in the drop box.

May 10, 2012 | SoftMath Algebrator - Algebra Homework...

This calculator cannot manipulate algebraic expressions. You can enter an expression and generate a table of values. You can enter an equation in one unknown and solve it. But you cannot do algebra.

You would need a calculator that has a Computer Algebra System (Algebra FX 2.0, or ClassPad 300/330). Sorry.

You would need a calculator that has a Computer Algebra System (Algebra FX 2.0, or ClassPad 300/330). Sorry.

May 10, 2012 | Casio FX-115ES Scientific Calculator

You need the TINspire CAS (Computer Algebra System) to do symbolic manipulations. The Blue TINspire (with TI 84 keyboard) can only perform numerical computations.

If you use variables, the calculator will assign the numerical value stored in the variable.

If you use variables, the calculator will assign the numerical value stored in the variable.

Aug 17, 2010 | Texas Instruments TI-Nspire Graphic...

With the ALPHA keyboard, Type in the NewProb command and press ]ENTER] It resets the one-letter variables to their default status.

Alternatively, you can use the CATALOG of commands to launch the NewProb command.

Another way is

In HOME directory, press the [2nd][F1] to activate the F6 key. In the menu list, press 1:Clear a-z and ]ENTER].

If you have to use the variable x multiplied by a function (sin, cos, tan, log, etc) do not used implied multiplication: enter the [*] explicitly.

Alternatively, you can use the CATALOG of commands to launch the NewProb command.

Another way is

In HOME directory, press the [2nd][F1] to activate the F6 key. In the menu list, press 1:Clear a-z and ]ENTER].

If you have to use the variable x multiplied by a function (sin, cos, tan, log, etc) do not used implied multiplication: enter the [*] explicitly.

Apr 14, 2010 | Texas Instruments TI-89 Calculator

Simplifying

g(x) = -1x

Multiply g * x

gx = -1x

Solving

gx = -1x

Solving for variable 'g'.

Move all terms containing g to the left, all other terms to the right.

Divide each side by 'x'.

g = -1

Simplifying

g = -1

g(x) = -1x

Multiply g * x

gx = -1x

Solving

gx = -1x

Solving for variable 'g'.

Move all terms containing g to the left, all other terms to the right.

Divide each side by 'x'.

g = -1

Simplifying

g = -1

Jan 21, 2010 | SoftMath Algebrator - Algebra Homework...

(4+x)(5-x)=(2+x)(7-x)

20-4x+5x-x^2=14-2x+7x-x^2

20+x=14+5x

20-14=4x

x=3/2:ans;

20-4x+5x-x^2=14-2x+7x-x^2

20+x=14+5x

20-14=4x

x=3/2:ans;

Oct 21, 2009 | SoftMath Algebrator - Algebra Homework...

Multiply throughout by (x+5)(22x+20)

(22x+20)+7(x+5)=(x+13)(x+5)

29x+25=x²+18x+65

x²-11x+40=0

x=[11±?11²-4×1×40]/2

x=[11±?-39]/2

(22x+20)+7(x+5)=(x+13)(x+5)

29x+25=x²+18x+65

x²-11x+40=0

x=[11±?11²-4×1×40]/2

x=[11±?-39]/2

Jun 23, 2009 | SoftMath Algebrator - Algebra Homework...

try clearing the memory of all the variables..that might solve the problem
mohit

Sep 23, 2007 | Texas Instruments TI-89 Calculator

May 21, 2014 | Texas Instruments TI-89 Calculator

Feb 17, 2014 | Texas Instruments TI-89 Calculator

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