Exterior Angles of a Polygon add up to 360°. In other words the exterior angles add up to one full revolution. Exterior angle
Binomial distribution
If a random variable X has a binomial distribution. we write X ~ B(n, p) (~ means ‘has distribution…’). n and p are known as the parameters of the distribution . Therefore mean and variance can be calculate by np and npq. Hence we can say depend on success and failure. Binomial distribution
Conversion of Co-ordinates
Convert from Polar to Cartesian. When we know a point in Polar Coordinates (r, θ), and we want it in Cartesian Coordinates (x,y) . we solve a right triangle with a known long side and angle: Answer: the point (13, 22.6°) is almost exactly (12, 5) in Cartesian Coordinates. Polar to cartesian
Complex Number
Conversion from Polar to Rectangular Form Complex and vice versa. r cos Θ = x , r sin Θ = y Conversion of polar to Rectangular
Sigma notation
Sigma Notation. Σ This symbol (called Sigma) means “sum up”. I love Sigma, it is fun to use, and can do many clever things. So Σ means to sum things up Sigma notation
Parabola
Vertex of a parabola is at the ‘origin’ and the axis of symmetry is along the x or y-axis, then the equation of the parabola is the simplest. So that its vertex is (h,k) and its axis of symmetry is parallel to the x-axis, it has an equation of (y – k)2= 4p (x – […]
Ellipses
Ellipse is all points found by keeping the sum of the distances from two points constant. An ellipse, informally, is an oval or a “squished” circle. The ellipse with a horizontal major axis is the following: + = 1. Hence one axis is minor while another major. Ellipses
System of equations
system of equations is a collection of two or more equations with a same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system. The equations in the system can be linear or non-linear. System of equation
Operation of Matrices
Addition of matrices is commutative which means A+B = B+A. Addition of matrices is associative which means A+(B+C) = (A+B)+C. The order of matrices A, B and A+B is always same. … The complexity of addition operation is O(m*n) where m*n is order of matrices Operation of Matrices
Linear trigonometric equation
Linear Trigonometric equations are either linear or quadratic in nature. To find the angle value(s) that satisfy the given equation. Because it is linear trigonometric eq. hence it has two roots. Linear trigonometric eq
