Inverse Cosine in Python
We have the acos function, which returns the angle in radians.
math
Inverse of Tan in python (tan-1)
math.atan(x) returned in radian, if you want degree, convert it using math.degrees(x)
How can I convert a number from base 8 to base 10?
To convert any base to base 10 just do the following: For every digit in the different base multiply that by the base and digit. For example: Works for any base … binary, hex, you name it just do that and it will convert to base 10.
How can I check if two segments intersect?
The equation of a line is: For a segment, it is exactly the same, except that x is included on an interval I. If you have two segments, defined as follow: The abcisse Xa of the potential point of intersection (Xa,Ya) must be contained in both interval I1 and I2, defined as follow : And … Read more
how to draw a slope field in matlab
so here is the equation: That is the code, which will help to do the job: It is also possible to use the package dfield. You can read it here. But I have not tested it for myself
What is the most efficient way to calculate the least common multiple of two integers?
The least common multiple (lcm) of a and b is their product divided by their greatest common divisor (gcd) ( i.e. lcm(a, b) = ab/gcd(a,b)). So, the question becomes, how to find the gcd? The Euclidean algorithm is generally how the gcd is computed. The direct implementation of the classic algorithm is efficient, but there are variations that take advantage of binary … Read more
What is the most efficient way to calculate the least common multiple of two integers?
The least common multiple (lcm) of a and b is their product divided by their greatest common divisor (gcd) ( i.e. lcm(a, b) = ab/gcd(a,b)). So, the question becomes, how to find the gcd? The Euclidean algorithm is generally how the gcd is computed. The direct implementation of the classic algorithm is efficient, but there are variations that take advantage of binary … Read more
How to perform bilinear interpolation in Python
Here’s a reusable function you can use. It includes doctests and data validation: You can run test code by adding: Running the interpolation on your dataset produces:
How to round up the result of integer division?
Found an elegant solution: Source: Number Conversion, Roland Backhouse, 2001
How can I check for NaN values?
math.isnan(x) Return True if x is a NaN (not a number), and False otherwise.