Question

suppose y= 2x^3-1/4x^4+1 then dy/dx= -8x^a+bx^3+cx^d/(4x^4+1) they want me to use the qoutient rule to find the values of A,B,C,D and F but im lost

Answer 1

what are they asking me to do?

Answer 2

Please use parentheses or the equation editor to write your problem. What you wrote is ambiguous.

Answer 3

suppose [y= 2x^3-1/ 4x^4+1\] then [dx/dy=-8x^a+bx^3+cx^d/(4x^4+1)^F\] they want me to use the quoutient rule to find the values of A,B,C,D AND F

Answer 4

\[y= 2x^3-1/ 4x^4+1\]
Is this what you mean?

Answer 5

yes

Answer 6

So you really mean this?
\[y= 2x^3-\frac{1}{4x^4}+1\]

Answer 7

\[y= 2x^3-1 all \div by 4x^4+1\]

Answer 8

Was that a "yes" or "no"?

Answer 9

no

Answer 10

Do you realize that this
\[y= 2x^3-1/ 4x^4+1\]
is the same as this:
\[y= 2x^3-\frac{1}{4x^4}+1\]

Answer 11

and that it is different than this:
\[y= 2x^3-\frac{1}{4x^4+1}\]

Answer 12

dude why couldnt you just anwser my question from the original post ?

Answer 13

if you were making those assumptions then you could of just anwser the question

Answer 14

Because I wasn't sure what you meant....

If you are in calculus, your first priority should be to be able to express yourself precisely. You ought to know orders of operation.

Answer 15

Use the equation editor. That way you can check your expression before you post it.

Answer 16

ok but i usually dont have problems w/ people not understanding the question i posted

Answer 17

Anyway, use the formula for the derivative of a power:
\[\frac{d}{dx}x^n=nx^{n-1}\]

Answer 18

You will also need the chain rule for the second piece.

Answer 19

i know what to use (the quotient rule) i dont know what there asking?

Answer 20

They are asking you to perform the derivative, and then read and match the exponents of your expression with the ones in the expression -8x^a+bx^3+cx^d/(4x^4+1). Just set the two expressions equal. Then multiply through with the LCD.

Answer 21

oh ok