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Exand and simplify (x-2)^2

When tackling this question you cannot simply multiply what is in the bracket as this this is not fully expanded. First you must rewrite it as (x-2)(x-2). From here we can on expand the brackets by multiplyi...
JS
Answered by Joshua S. • Maths tutor
11642 Views

Differentiate [ x.ln(x)] with respect to x

The product rule is used to differentiate this since we are trying to differentiate the product of 2 parts--x and ln(x)So using the product rule which is d/dx=u.(dv/dx) +v.(du/dx)let u=x and v=ln(x)then du/d...
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Answered by Omolola L. • Maths tutor
4926 Views

Why does the poem rhyme?

That is such a good spot. Rhyme is a really important part of poetry - it can completely change the tone of the poem. You can have rhyme at the end of a line, for example : 'cat' and 'bat'. This can give a r...
LC
Answered by Lily C. • English tutor
2593 Views

Describe the process of a simple reflex action (6marks)

Receptors in the skin which are sensitive to changes in pain, pressure and temperature detect a change in one of these factors. This acts as the stimulus for the reflex response. This stimulus triggers an el...
JH
Answered by Jenna H. • Biology tutor
11581 Views

Describe how an electrical impulse would travel across a synapse.

An electrical impulse arrives at the synaptic knob in the pre-synaptic neuron. This causes the voltage-gated calcium ion channels to open and calcium ions will diffuse into the synaptic knob, down the concen...
EZ
Answered by Ellie Z. • Biology tutor
4426 Views