Mathematics is the base of human civilization. From cutting vegetables to arranging books on the shelves, from tailoring clothes to motion of Planets - Mathematics applies everywhere.
The length of the perpendicular from the point (x1, y1) to the line ax + by + c = 0 is
Sometimes, the given functions may not be in an integration form and the variable of integration (x in dx) can be suitably changed into a new variable by substitution so that the new function can be integrated. Integration by Substitution is also called u-substitution.
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