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Politics can often be brought down to 2 principles; perceptions and narratives. When David Cameron conceded and decided to hold an EU referendum in order to appease UKIP's right wing voting base, he did s...

The subjunctive often expresses doubt - it is more like a mood than a tense. If something is uncertain we use the subjunctive.

A useful way to remember som...

The Presidency of the United States is one bound by constitutional checks and balances as set out by the Founding Fathers to prevent a tyrannical President. The formal constitutional constraints on the Pr...

Led by BF Skinner in the 1950s and 1960s, it was the position that children acquire
language just as they acquire other behaviors-through a system of Positive and Negative
Reinforcement. A chi...

a) y = 9 -6x^2 - 12x^4 

dy/dx = -12x - 48x^3 

b) At stationary points dy/dx = 0. 

-12x - 48x^3 = 0 

48x^3 + 12x = 0 

4x^3 + x = 0

x (4x^2 + 1) = 0 

Either ...