For the function f(x)=  -4√x - 1 , find the inverse function

as you already know, to get the inverse of any expression, we start off by doing a quick switch on the variables, and then solve for y.

for that inverse to be a function, it has to be a one-to-one function, and that can only happen if it can pass the horizontal and vertical lines tests, and that can only be if x ⩽ 0, check the picture below.

binomial distribution

median= 2

range = 7-0 = 7

how to find median?

no. of term=28

median=(28+1)/2=14.5th term

the 14th and 15th term are 2, therefore the median is (2+2)/2 = 2