Search over 10,000 free study notes

To differentiate this, we must use the Chain Rule . This is because we have two functions multiplied by each other: (x) sin⁡(x). We use the substitution u = sin(x). This is our initial function, and we can s...

The first thing to remember is that the tangent to the curve at a given point has the same gradient as the curve at that point. Let's consider the general case y=f(x) at a point c=(x1,y1). Step 1:We have to ...

Firstly, note that cos^2(x)+5sin^2(x)= cos^2(x) +sin^2(x) +4sin^2(x). By trignoemtric identies, cos^2(x)+sin^2(x)=1 and so we can just integrate 1+4sin^2(x) since this is equal to cos^2(x)+5sin^2(x). Again, ...

A quick way to remember this is BENDO MEX: B reaking bonds is ENDO thermic = +ve enthalpy change M aking bonds is EX othermic = -ve enthalpy change

An easy way to remember the difference between Oxidation and Reduction is OIL RIG: O xidation I s L oss (of electrons) R eduction I s G ain (of electrons) Oxidation involves the gain of electrons (or oxygen)...