About Me Shubham Agrawal IIT Roorkee 2013 graduate IIM Dropout SBI PO under 100 ranker (dropout) Left job to pursue my passion- Education
Linear Equation with 1 variable
Applications Q. 5/7 of 4/15 of a number is 8 more than 2/5 of 4/9 of the same number. What is half of that number?
Applications Q. 5/7 of 4/15 of a number is 8 more than 2/5 of 4/9 of the same number. What is half of that number? 2 l i S
Linear Equation with 2 variables
Concept Usually of the form ax + by +c o Represents a line in x y plane For every value of x, there's a corresponding value of
Concept If there are 2 equations of the form 1st Method 2 2. 25 , b CA 2 2. 2.
Concept If there are 2 equations of the form 2nd Method Subtract or add one equation with the other to eliminate either x or y
Applications Q. The sum of the digits of a two digit number is 16 If the number formed by reversing the digits is less than the original number by 18. Find the original umber.
Applications Q. The ratio of the ages of the father and the son at present is 3: 1. Four years earliar, the ratio was 4: 1. What are the present ages of the son and the father? 2 Methods:
Concept . Degree (or power) of one variable is 2 General form: ax2 + bx +c0 where a, b and c are all real numbers and a 0. Example: 2x2 - 5x + 3 0
Question Q. Solve 2x2 + 6 7x 2 1 -3 2 3 2
IIT Roorkee Grad. IIM L |Dropout. SBI PO 2017 Topper and Dropout. Full Time Educator.