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

In general, we could apply the formulax=\...</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;}

AL
6287 Views

How to find conditional probability

Take this problem as an example: 

5 white socks and 3 black socks are in a drawer. Stefan takes out two socks at random. Work out the probability that Stefan takes out two socks of the same co...

JU
Answered by Joseph U. Maths tutor
12448 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.

...

LG
Answered by Lisa G. Maths tutor
144718 Views

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


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...

CB
Answered by Chloe B. Maths tutor
5366 Views

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