Question

Let f (x)=2x^2,then f(f(x))=​

Answer 1

Answer:

f(x) = 2x + 2

This function uses a variable called 'x'. The way the function would work is to simply replace the variable with a number. for eg.

for x = 1

f(1) would be 2 * 1 + 2

TO solve the above equation, you should use the mathematical rule of BODMAS. Bar, Of, Divide, Multiplication, Addition, Substraction.

That is the priority order to solve a mathematical equation.

So,

2 * 1 + 2

=2 + 2

=1

Now lets try F(2)

2 * 2 + 2

= 4 + 2

=6

F(F(3)) would mean

2 * F(3) + 2

= 2 * (2 * 3 + 2) + 2

= 2 * (6 + 2) + 2

=2 * 8 + 2

= 16 + 2

=18

So the answer to your question is 18! :)