A function f(x) has these properties:

F(1)= 1

F(x+1)= f(x) + 3x(x+1)

Determine f(3)

the answer is 27

Guest Mar 23, 2015

#1**+5 **

I thnk that they are all meant to be capital Fs

A function F(x) has these properties:

F(1)= 1

F(x+1)= F(x) + 3x(x+1)

Determine F(3)

the answer is 27

--------------------

F(1)=1

F(2) = F(1+1)=F(1)+3*1*(1+1) = 1+6=7

F(3) = F(2+1)=F(2)+3*2*3 = 7+18 = 25

the answer is 25 **not** 27.

It would be interesting for someone to find the equation for this sequence. (Without it being recursive)

Melody
Mar 24, 2015