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How do you expand brackets? Grid/smiles and eyebrows
How confident are you with factors and times ...
Unlike if we had just x in the numerature, here the chain rule will do us no good. Integration by parts in this case also is little help - we end up with expressions at least as difficult as we started w...
Rearrange the first equation to give b as the subject.
b = 16 - 6a
Then substitute that equation for b into the second equation.
5a - 2(16 - 6a) = 19
Simplify this equation (re...
Firstly, let's move the x^3's onto the same side (and preferably keep them positive). Let's add x^3 to both sides, which means the RHS will now read '2x^3 - 25' and the LHS will read '103'. Next we wan...
Understand the question:
'w.r.t' stand for 'with respect to', so the qestions is asking for the dericative and integral to be calcuated in terms of x - so find dy/dx and (integral sign) y dx...
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