Istruzioni pratiche per usare la calcolatrice e gli altri strumenti CalcES.
The Guide isn't available in Italian yet, so it's shown in English.
Find successive terms of a recurrence and keep track of their term numbers using a two-statement CALC loop.
Turn Verify on, enter an equation or inequality, and read True or False to check whether it holds.
Find a variable's stored value, replace it or clear that variable without disturbing the others.
Convert 255 from decimal to binary and hexadecimal, then enter each form to check that it gives 255 again.
Enter four side lengths, fill a column with their squares, and change a length to check that its area updates.
Enter paired data to find the linear regression equation and correlation coefficient, then estimate y for a new x.
Enter two limits, a mean and a standard deviation to find the probability between the limits.
Find the cut-off score for the top 5% of a normal distribution using its mean and standard deviation.
Evaluate a function's derivative at a chosen x-value to find the slope of the curve there.
Enter a 2 by 2 matrix once, then calculate its determinant and exact inverse.
Enter two 3-D vectors once to calculate their dot product as a number and their cross product as a vector.
Use Normal PD to find the normal probability density at a given value, mean and standard deviation.
Enter a list of numbers to find its mean, population standard deviation and sample standard deviation.
Enter three known terms of a proportion to find the missing number as an exact fraction or a decimal.
Enter a chemical formula to find its molar mass, using calcium hydroxide as an example.
Enter a cubic's four coefficients, read its roots, and check them by factorisation.
Enter paired data, choose a curved regression, read its coefficients, and estimate a value from the fitted equation.
Recall an earlier calculation, correct one digit, and rerun it and the calculation that used its answer.
Calculate fractions, square roots and pi in exact form, read their decimal values, and switch between the two.
Calculate the integral of x² from 0 to 2 and read the exact fraction 8/3 with its decimal approximation.
Find the probability of exactly three heads or at most three heads in ten fair coin tosses.
Find the probability of exactly two calls or at most two calls in a minute when the mean is three.
Roll two dice 100 times, read how often each sum appears, and repeat the experiment with a coin.
Enter three coefficients to find both the roots and the vertex of a quadratic function.
Enter two rows of coefficients to solve a system of two linear equations for x and y.
Store an answer in a letter and use it in later calculations, even after Ans has moved on.
Add CalcES to your Android or iPhone Home Screen so you can open the calculator in one tap.
Calculate a sequence of f(x) values over a chosen range without re-entering the expression.
Multiply (2 + 3i)(1 - i) to get 5 + i, then find its modulus and polar form.
Enter a formula once, then change its variable to obtain several results.
Tap the Save icon to keep an exact answer in a letter, then use that letter in your next calculation.
Read the different forms of an answer, then show it in degrees, minutes and seconds and switch back to the fraction.
Solve x² − 5x + 6 = 0, open its parabola, and read the coordinates of its roots and lowest point.
Enter the coefficients, choose the relation, and identify the intervals that satisfy it.
Enter a complete equation and let the calculator isolate x automatically, without opening a separate mode.
Enter the coefficients of three linear equations and verify x, y, and z.
Choose whether to use the Advanced keypad and find functions without a key.
Insert the standard acceleration of gravity to calculate the weight of a 5 kg object.