Introduction to double integral:Let us consider a single valued function f(x, y) of two independent variables x and y defined in a closed region R of the x, y plane. Divide the region R into n sub regions ΔR1, ΔR2, .... ΔRn by drawing lines parallel to the axes of coordinates.
For solving problems on double integral,you will need to know the integrals formula.
Double integral polar co-ordinates: In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a fixed point and an angle from a fixed direction.
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