the perpendicular line segment BA passes through the origin,if the coordinates A are (4,0),find the coordinates B

Continuity and differentiability

Re z^4 - (Re z^2)^2, if z = x + jy.

Re z^4 - (Re z^2)^2, if z = x + jy.

Maths class 9 number  system 

What is rational no.

find the equation of all the tangents to the curve y = cos (x + y), –2π ≤ x ≤ 2π, that are parallel to the line x + 2y = 0. [2x + 4y – π = 0, 2x + 4y + 3π = 0

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