Learning Mathematics

1.1    Permutation Short Questions-Answers                                                                                                       1.            In how many ways can eight people   be seated in a row of eight seats so tha…

General equation of second degree The equation of the form ax 2 + 2hxy + by 2 + 2gx + 2fy + c = 0 is the general equation second degree in x and y. The pair of straight lines A 1 x + B 1 y + C 1 = 0 and A 2 x + B 2 y + C 2 = 0 can always be …

Circle A circle is the locus of a point which moves so that its distance from a fixed point, called centre, is equal to a given distance. The given distance is called the radius of the circle. Different forms of equation of circle: ·        …

Complex number The number of the form a + ib, where a and b are real number and i = ,square root of (-1) is called a complex number. The complex number is generally is denoted by z or w and it can also be written as ordered pair form (a, b). …

Set and notation A well defined collection of objects is known as a set. The set is denoted by the capital letters and its elements by small letters. Subset and proper subset A set A is subset of set B, if every elements of set A is also an …