Question

Evaluate (3!)(4!) .



30

144

5,040

Answer 1

what are your attempts? your thoughts?

Answer 2

huh this math is all new to me i have been rushing through all the old ones so i won't have them

Answer 3

what does the ! notation tell us?

Answer 4

its called a factorial

Answer 5

i don't know this is all knew to me

Answer 6

This could help.
http://en.wikipedia.org/wiki/Factorial

Answer 7

just gotta evaluate

Answer 8

then tat is what you need to review, look up the definition of a factorial

Answer 9

you wont be able to evaluate it without knowing what a factorial is

Answer 10

4! = 4*3*2*1 right?

Answer 11

Rylee, correct that is what the notation is short for :)

Answer 12

Ok cool, been awhile since I've used those.

Answer 13

what do u understand by factorial ??

Answer 14

it also has an integral definition related to the gamma function: \[n!=\Gamma(n+1)\]

Answer 15

@amistre64 Is it not possible to just use a scientific calculator to evaluate this question? Or is that not allowed when you're answering these types of question?

Answer 16

\[n!=\int_{0}^{\infty}x^ne^{-n}dt\]
which means that we can use it for non interger and negative values as well

Answer 17

modern calculators can solve this in 1 second, but this problem I feel is aimed at no calculators.

Answer 18

on the computer i am on got no scientific calculator

Answer 19

a scientific calculator might have a (!) key

Answer 20

i had one it didn't

Answer 21

but for numbers less than like 8 its pretty simple to do by hand

Answer 22

elh has those caculators no '!' key on it

Answer 23

bye

Answer 24

... my integral is messed up ... e^-x and dx

Answer 25

(3!)(4!) = 3*2*1*4*3*2*1

Answer 26

Any ! just means to multiply downwards like a staircase

Answer 27

well, thats a redimentary concept, but then what is the solution to .5! ?

Answer 28

Shes is in algebra 1 I know I said was wrong but its learned in steps for now.

Answer 29

:) i know, im just being a pain lol

Answer 30

All good! you are right:)