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Points To Remember   • Coordinate Geometry : The branch of mathematics in which geometric problems are solved through algebra by using the coordinate system is known as coordinate geometry. • Coordinate axes : The position of a point in a plane is determined with reference to two fixed mutually perpendicular lines called the coordinate axes. • Ordered pair : A pair of numbers a and b listed in a specific order with 'a' at the first place and 'b' at the second place is called an ordered pair (a,b). Note that (a,b)  ≠   (b,a)  • Quadrants : The coordinate axes divide the plane into four parts which are known as quadrants. From figure • The horizontal line  XOX' is called the X-axis. • The vertical line YOY is called the Y-axis. • The point O is called the origin.  • Any point lying on x-axis or y-axis does not lie in any quadrant. Using the convention of signs, we have the signs of the coordinates in the various quadrants as g

Unit I Introduction to Book-keeping and Accountancy     To download Unit I (Introduction to Book-keeping and Accountancy) notes in PDF for future use please click on the link below. Theory - CLICK HERE Note : All the copyright of this PDF content belongs to NBSEguideonline. It is available to all NBSEguideonline users without any subscription. ***** VERY SHORT ANSWER TYPE QUESTIONS 1. What do you mean by Book Keeping ?  Ans : Book keeping is a combination of two words i.e, 'BOOK' & 'Keeping' where 'Book' means maintenance of business & 'Keeping' means to keep the book in a systematic manner and updated with the complete records of all the transactions. 2. Define Book Keeping. Ans : According to Nortch Cott - “Book-keeping is an art of recording in the books of accounts the monetary aspects of commercial or financial transactions." 3. Draw the process of Book keeping. Ans : The process of Book keeping is draw below : 4. Mention the objective

The chapter Polynomials starts with the definition of degree of the polynomial, linear polynomial, quadratic polynomial and cubic polynomial. This chapter includes the questions on finding the number of zeroes through a graph which requires the understanding of Geometrical Meaning of the Zeroes of a Polynomial. Then students will learn regarding the Relationship between Zeroes and Coefficients of a Polynomial where they will have to find the zeros of a quadratic polynomial and in some of the questions they have to find the quadratic polynomial. Lastly, the concept of division algorithm is defined and students will find the questions related to it.   To download Ch-2(Polynomials) solutions in PDF please click on the link below : Ex - 2.1 : Download PDF Ex - 2.2 : Download PDF Ex - 2.3 : Download PDF Ex - 2.4 : Download PDF Note : All the copyright of this PDF content belongs to NBSEguideonline. It is available to all NBSEguideonline users without any subscription.   Points to Remember •

Real Numbers In this Chapter, students will get to know about real numbers and irrational numbers. The chapter starts with the Euclid’s Division Lemma which states that “Given positive integers a and b, there exist unique integers q and r satisfying a = bq + r, 0≤r<b”. The Euclid’s Division algorithm is based on this lemma and is used to calculate the HCF of two positive integers. Then, the Fundamental Theorem of Arithmetic is defined which is used to find the LCM and HCF of two positive integers. Lastly, the concept of an irrational number, rational number and decimal expansion of rational numbers are explained with the help of theorem. To download Ch-1(Real Numbers) solutions in PDF please click on the link below : Ex-1.1 :  Download PDF Ex-1.2 :  Download PDF Ex-1.3 :  Download PDF Ex-1.4 : Download PDF Note : All the copyright of this PDF content belongs to NBSEguideonline. It is available to all NBSEguideonline users without any subscription.  Points To Remember   Natural num