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Firstly, this differential equation should be solved using the separation of variables method, where all y terms are moved the left hand side of the equation and all x terms are moved to the right hand si...

The Imperfect:Describes habitual actions/repeated actions in the past Could describe an ongoing action Could describe a simultaneous action Look out for time expressions like siempre, dur...

An action potential reaches the presynaptic neurone. This causes calcium channels to open, leading to calcium ions entering the synaptic knob via facilitated diffusion. This causes synaptic vesicles conta...