Search our library of Maths A Level questions

Top answers

Maths

A Level

Using Discriminants to Find the Number of Roots of a Quadratic Curve

In general, we could apply the formula $x=\...</div></a><style data-emotion=$ .css-14jxgv6{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;}.css-14jxgv6 div:first-child{margin:10px 10px 5px 0;}.css-14jxgv6 div:last-child{margin-left:auto;}

Answered by Angela L. • Maths tutor

5632 Views

How do you find and solve a composite function?

Composite functions can be thought of as 'functions within functions'. For example, let's suppose that

f(x) = x³

g(x) = x + 5

defined for all real numbers.

...

Answered by Lisa G. • Maths tutor

129079 Views

Why do I have to add +c when I integrate?

Answered by Owen C. • Maths tutor

55207 Views

How do I multiply complex numbers?

A complex number has the form a+bi. We call a the 'real' bit (ie. the bit on a regular number line) and b is the 'imaginary bit.
Multiplying complex numbers is done in a very similar way to multiply...

Answered by Chloe B. • Maths tutor

4659 Views