Addition, subtraction, multiplication, division and power are:+,-,*,/and.
For example: 4-2 = 2,3 * 7 = 21,6/2 = 3,3 = 27; ? Function:
Sin(X)、Cos(X)、Tan(X)、Asin(X)、Acos(X)、Atan(X)、Log(X)、Sqrt(X)、Exp(X)、Int(X)、Abs(X)、Rnd
For example:? Sin (3.14) = 0.0016 (x = 3.14 refers to radian) cos (3.14) =-1tan (3.
TG(3. 14/4)= 0.9992 Asin( 1)= arcsin( 1)= 1.5708 Acos( 1)= Arccos( 1)= 0
atan( 1)= Arctg( 1)= 0.7854 Log( 10)= Ln( 10)= 1
2.3026 (e = 2.718281828459045, not 10) Rnd =
0.18288495144310/4 (rnd generates random numbers between 0- 1.
Note that the expression is not Rnd(X), but RND) sqrt (4) = (4 0.5).
=(40.5)= 2 exp(2)=(e^2)=(E2)= 7.389 1 int(3.34)= 3、Int(3.65) = 4
Abs(- 1.2)= 1.2 Abs( 1.2)= 1.2？ How to use:
Step 1: Enter the correct function expression in the F(X) box.
For example: Sin(x)+Cos(x), or the arithmetic expression 3 * sin (3)+cos (4);
Step 2: If the arithmetic expression is entered in step 1, click "Operation" to get the result. For example: 3 * Sin(3)+Cos(4)= 1
-0.2302835967; If the first step is to enter a function expression, you should set the value of the variable in the X box, for example, X =
0.5, and then click "calculate" to get the result.
Then, sin (x)+cos (x) =1.4438+0005.
Step 3: If you enter a function expression in the first step, you can enter a slight change of the independent variable in the MicX box after setting the value of the independent variable in the X box, for example, MicX = =.
0. 1, and then click the "+"or "-"button to adjust the value of the independent variable, and the function receiving calculation can be automatically realized.
Extended data:
Definition of function: Given a number set A, let the element in it be X, and now apply the corresponding rule F to the element X in A, and record it as f(x) to get another number set B. Assuming that the element in B is Y, the equivalent relationship between Y and X can be expressed as y=f(x).
We call this relationship a functional relationship, or function for short. The concept of function includes three elements: definition field A, value field C and corresponding rule F, among which the core is corresponding rule F, which is the essential feature of function relationship.
Function was originally translated by Li, a mathematician of Qing Dynasty in China, in his book Algebra.
He translated this way because "whoever believes in this variable is the function of that variable", that is, the function means that one quantity changes with another quantity, or that one quantity contains another quantity.
The definition of function is usually divided into traditional definition and modern definition. The essence of these two functional definitions is the same, but the starting point of narrative concept is different. The traditional definition is from the perspective of movement change, and the modern definition is from the perspective of set and mapping.