Class 9 Maths Polynomials Polynomials in Two variables

Polynomials in Two variables

Area of a rectangle can be represented using polynomial                              p(x,y)= xy     

Perimeter of Rectangle can be represented using Polynomial,                    q(x,y)=2x+ 2 y, where x & y are variables

Area of a cylinder can be represented using polynomial                                 p(r,h)=πr2h

Perimeter of cylinder can be represented using Polynomial         q(r,h)=4πrh , where r & h are variables

Notice that all the four polynomials above has 2 variables. Such kinds of polynomials are called polynomials in two variables. E.g. p(x,y)=x3 – y2 + 6xy + 9

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