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Derivative of 2xsin(x): 2sin(x)+2xcos(x)Set derivative equal to zero: 2sin(x)+2xcos(x)=0Solve: only valid when x=0Therefore the only stationary point is (0,0) ie the origin.

Stalinism is defined as the ideological pursuits of Stalin’s reign, seen in the command centralised economy, and the application of a totalitarian rule to reach Communism. De-stalinisation refers to the p...

I would begin by instructing them to draw a diagram of the problem. This would be of a cliff, labelled height s_y, with an arrow representing the ball being thrown from the top. This should be l...

A negative externality is a type of market failure that occurs when the consumption or production of a good has an external cost on a third party that is not involved in the transaction. This external cos...

The stationary points on a curve are the exact point of a maximum, minimum or point of inflection. They can be defined as points where the gradient, dy/dx = 0. You can show this by drawing a tangent to th...