Question

Math help.

Answer 1

There you go. Correct.

Answer 2

Yuss!

Answer 3

The next one is a bit hard, plz check my work

Answer 4

Is this it?

Answer 5

Yes it's correct but just note that you did g(f(x), not f(g(x))

Answer 6

Sorry, i meant g(f(x)) . Hold on i have a question for u

Answer 7

What if i want to flip the denominator ?? Will the signs in the denominator change? Let me draw for u

Answer 8

No when you move things up and down the numerator/denominator, You are not changing the sign of the function. Instead, you are changing the sign of the exponent.

Answer 9

For instance

1/x = x^ -1

Answer 10

Yeah thats what i was thinking

Answer 11

So instead, you are keeping the sign of the term constant, but you are raising the full term to the -1 power.
(x^3 + 1 -x) ^-1

Answer 12

But my textbook, has the answer as f(g(x)) = x^3 +1 -x....

Answer 13

Let me check one more time

Answer 14

Ah, I forgot to realize you're using the same functions. The numerator is x, not 1.

Answer 15

yeah

Answer 16

let me point out your error

Answer 17

The error you made is when you muliplied 1/x again, when x should've been the common denominator.

Answer 18

x was the common denominator, there's no reason to multiply 1/x with x again. Just do multiply it to x^2 and 1.

Answer 19

Okie

Answer 20

Is this from algebra 2?

Answer 21

This is from my college calc fundamentals prerequisites section...

Answer 22

So did we find why’s there an x in the numerator?

Answer 23

Because the denominator has a fraction itself

1/((x^3+1-x)/x)

the reciprocal of that brings the x up.

Answer 24

Ah, so are you taking calc 1 and 2 after?

Answer 25

I don’t wanna think about it... i get depressed....i don’t wanna think and lose motivation ...

Answer 26

Let me draw the thing...hol up

Answer 27

Uhgg they sneaky Wizards..... i see what they did..but i didnt take the LCD but instead made the fractions equivalent...let me do it but taking the lcd

Answer 28

No you did it a bit wrong.

What is the LCD of x and x^2?

Answer 29

There’s a 1 in the denominator of x^2

Answer 30

It should be x because that is the LCM

Answer 31

Can you show me? Plz

Answer 32

You multiply x^2 with x and -1 with x. right?

Answer 33

That's all you need to do. And then simplify.

Answer 34

That’s what i was doing tho

Answer 35

So it then becomes
1/((x^2(x) +1 -1(x))/x)

Answer 36

And you get
1/((x^3+1-x)/x)

Answer 37

So you just simplify from there..

Answer 38

How do u take the lcd of a variable ???

Answer 39

Just like how you would do with numbers

For instance

8 and 4
8 -> 4 and 2
4 -> 4 works

similarly
x^2 and x
x^2 -> x and x
x -> x.

Answer 40

X goes into x once..

Answer 41

Yeah so you would continue from there

Answer 42

Right. So simplify the x(x)^2 + 1 -x

Answer 43

You get x^3 + 1 -x

Answer 44

So you have

Answer 45

Yes there you go

Answer 46

Jesus..

Answer 47

Thanks bro...really appreciated

Answer 48

I suggest that you watch the topics being explained online (youtube) instead of simply from the book.

Answer 49

I will

Answer 50

Thanks

Answer 51

This book is literally written by our prof lol

Answer 52

oh boy

Answer 53

Yeah let’s not scare me lol

Answer 54

K i’ll Catch you on the next one. Thanks

Answer 55

np