MATLAB ProgrammingPage 4 sur 42
MATLAB Programming, Fundamentals of MATLAB, MATLAB operator
MATLAB Operator
MATLAB have a few operator types to manipulate shown below
Note: Variables a and b below represents number
Arithmetic Operations
Arithmetic Operator is used as mathematical operator that manipulates the number according to the formula requirement. The result is shown as numbers.
| Addition | a + b |
|---|---|
| Subtraction | a - b |
| Multiplication | a * b |
| Forward division | a / b |
| Backward division | a \ b |
| Exponentiation | a ^ b |
| Assignment | a = b |
Relational Operations
Relational Operator is used to check if numbers are having any significant relationship with one or another. The results is usually is shown TRUE or FALSE.
| Equal To | a == b |
|---|---|
| Not Equal To | a ~= b |
| Greater than | a > b |
| Greater or equal to | a >= b |
| Lesser than | a < b |
| Lesser or equal to | a <= b |
Logical Operations
Logical Operator is used to check if number fulfills the logical conditions, the result is usually shown TRUE or FALSE.
| Logical AND | a && b |
|---|---|
| Logical OR | a || b |
| Logical NOT | a ~ b |
Elementary Mathematics Constants and Functions
Besides mathematical formula, there are a few mathematical constant and function that you can use to make your works in Matlab easier.
More information about the functions used can be found here:Mathematical_symbols
| pi | Returns value of 3.1416 (Note: Ratio of a circle's circumference to its diameter) |
|---|---|
| sqrt(a) | Returns square root of a |
| exp(1) | Returns value of 2.7183 This is exponential function (Note: it is inverse of natural log, try log(exp(1) and see the result) |
| log(a) | This logarithm operator is to find natural number log of a number |
| log10(a) | This base10 log operator is common logarithm for base 10 |
| mod(a,b) or rem(a,b) | This modulo operator returns the remainder after a is divided by b. |
| : (Colon) | Generate a sequence |
b > 0: round to a digits to the right of the decimal point.
b = 0: round to the nearest integer.
b < 0: round to a digits to the left of the decimal point. |
| primes(a) | Returns a list of prime numbers less than or equal to number a |
| gcd(a,b) | Returns the greatest common divisors of the number of a and b. |
| lcm(a,b) | Returns the least common multiples of the number of a and b. |
Trigonometry Operations
Trigonometry Triangles (Image: Celso Soto, CC BY-SA 4.0)
The trigonometry formula are given as followed:
Sin α - a / h
Cos α - b / c
Tan α - a / b
| sin(α) | This sine operator returns sine value of argument in radians |
|---|---|
| sind(α) | This sine operator returns sine value of argument in degree |
| cos(α) | This cosine operator returns cosine value of argument in radians |
| cosd(α) | This cosine operator returns sine value of argument in degree |
| tan(α) | This tan operator returns tangent value of argument in radians |
| tand(α) | This tan operator returns tangent value of argument in degree |
| deg2rad(α) | Convert angle from degrees to radian |
| rad2deg(α) | Convert angle from radians to degrees (Note: Try to convert the pi from radian to degrees ) |
Matrix Operations
| [ ] | Container for matrix |
|---|---|
| , | Matrix row separator |
| ; | Matrix column separator |
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