Aimed squarely at the Secondary school, this would be the calculator 991 ex 570ex of choice for any student. The favorite calculator for student. Complete calculator for high school and university student.
Some of the new features that make this compelling for me are as follows:
The incredibly high definition screen and multi-line display options make it easy to enter calculations and see answers in textbook style and clarity - be they with fractions, brackets, surds (roots), or any combination.
The new Random Integer function makes it easy to simulate coin flips, dice rolls and even card selections or lottery draws, opening up possibilities for a huge variety of mathematical experiments and games.
Factorising large numbers into powers of prime factors with a single FACT command - amazing.
Incredible power to solve equations and systems of equations or inequalities. The machine will solve algebraically any polynomial equation up to 4th degree (quartics). It can find a root for any general equation using Newton-Raphson to refine a user-supplied initial approximation.
Similarly systems of simultaneous equations now go up to four equations in four unknowns. Also, by using the Inequality function on a quadratic, cubic or quartic polynomial, one can quickly find the points on the graph (if any) where it crosses the x-axis.
Full symbolic calculator
Matrices can now be input up to 5 x 5, with the calculator 991 ex 570ex happily finding determinants, sums, products and even inverses. The previous limit was 3 x 3 matrices, although even this was sufficient to handle most exam questions.
This was, for me, the main reason for my purchase. I can now finally dispense with my statistical tables - Binomial, Poisson and even Normal distributions are now covered completely. For example, one can calculate the probability that three coins out of five will show Heads (0.2734375); the probability that a person is taller than two standard deviations from the mean (0.05399096651); a two-tailed 95% Normal confidence interval (+/- 1.959964028) etc. All with a few taps - just entering the values and reading off the result. Note to CASIO - add in Chi-Squared values and you will have all the lab scientists and social scientists queueing up as well!
- Mean, Sum, Population Standard Deviation, Sample Standard Deviation, Min, Max, Median, Q1, Q3
- Multifunction calculator: algebra, complex, calculus, matrix, vector, ...
- Linear regression
- Quadratic regression
- Logarithm regression
- E exponential regression
- ab exponential regression
- Power regression
- Inverse regression
Vectors - including Scalar and Cross Product up to 3-D vectors
Calculus - numerical differentiation and integration
Complex Numbers - Work with both Modulus/Argument and Cartesian form
Support full trig functions калькулятор sin cos
Function calculator: programmable (for pro user)
Natural display, powerful new functions and the same ease of use in an affordable calculator 991 ex 570ex from one of the world's most trusted calculator manufacturers make this the most highly recommended product for school use currently on the market. Design beautifully scientific, so you can use calculator one hand
The calculator include two mode: full science calculator and simple scientific calc
Simulate for texas, ti84+ calculator
تغییرات در نسخه جدید
To be iOS tester, go to https://testflight.apple.com/join/1HNIsrMr
- Removed automatically duplicate history.
- Improved sum function.
- Fixed some bugs