Hello,

Could you please tell me what the first derivative is of the following:

y = 2/(2x+e^{2x})

Is it (1+xe^{2x})/(2x+e^{2x})^{2} or perhaps -4(1+e^{2x})/(2x+e^{2x})^{2} ? I am a little confused between the two!

Thanks so much for your help.

Esther

Rather than use the quotient rule I would write