Texas Instruments TI-89 Tip List page 432

zeros() function algorithm
zeros(expr,var) is expr>list(solve(expr=0,var),var)
Texas Instruments FAQ for the TI-92 Plus
http://education.ti.com/product/tech/92p/faqs/faqs.html
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What types of 1st- and 2nd-order Ordinary Differential Equations will the TI-92 Plus solve symbolically?
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What types of Systems of Equations can be solved using the TI-92 Plus?
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What is Advanced Mathematics Software?
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How much memory does the TI-92 Plus have?
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Are there any engineering applications for the TI-92 Plus?
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Is user data archive memory erased by reset?
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Are the TI-92 and TI-92 Plus compatible? What CANNOT be shared between the TI-92 and the TI-92 Plus?
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Is the TI-92 Plus allowed on College Board tests (SAT, ACT)?
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Are there any support materials or workbooks for the TI-92 Plus?
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What are the appropriate courses for the TI-92 Plus?
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How much do the AMS upgrades for the TI-92 Plus cost?
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Is Texas Instruments still selling the TI-92 Plus Module?
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Does the TI-92 Plus use the same ViewScreen as the TI-92?
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What Data Collection tools is the TI-92 Plus compatible with?
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What are the main differences between the TI-92 and TI-92 Plus?
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How much does the TI-92 Plus cost?
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What do Flash and electronically upgradable mean?
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Does the TI-92 Plus work with the TI-Graph Link?
What types of 1st- and 2nd-order Ordinary Differential Equations will the TI-92 Plus solve
symbolically?
1st Order: separable, linear, Bernoulli, y'=f(a*x+b*y), exact, integrating factor independent of x,
integrating factor independent of y, and homogeneous.
2nd Order: linear constant coefficient (and a few variable coefficient), missing y, missing y', missing x,
missing both y' and x.
What types of Systems of Equations can be solved using the TI-92 Plus?
solve(...) and cSolve(...) return real or complex solutions of linear or nonlinear systems of equations.
For linear or polynomial systems, they use the Gaussian or Groebner elimination method to seek all
solutions. Otherwise, they use a damped-Newton/steepest-descent method to seek an approximate
solution close to the user's guess, which defaults to 0.0 for each component.
What is Advanced Mathematics Software?
Advanced Mathematics Software is the name of the software features available on the TI-92 Plus.
Features of Advanced Mathematics Software are:
! Symbolic Differential Equation Solving
! Numeric Differential Equation Graphing
! Additional Linear Algebra, e.g. eigenvalues, eigenvectors, functions of matrices, LU and QR
decompositions
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