#partial derivatives f(x,y)= 5x^3 -y^2 +3x*y
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Wdym what is f(x,y)?
Do you mean the partial derivative with respect to y ?
My bad f_x(x,y)
It’s the partial derivative with respect to x
The answer is already given here
Do you not understand how they arrived at it ?
It was the exam that I failed. I try my bret
How
Your task is to find $f_{x}(x,y)$, right ?
Exotic_rotor
And I’m assuming $f_{y}(x,y)$ as well
Exotic_rotor
Oh nvm I misread the question, I thought you had to calculate the partial derivatives for the function in the image
f(x,y)=5x^3-y^2+3xy, to calculate t he partial derivative with respect to x you must fix your variable y, so your function is a function of x, your see y as a constant, then calculate its derivative as a function of x
The only thing you need to know is how to calculate a derivative
Yes but idk what happens to the y
When you calculate the derivative with respect to x, you calculate the derivative of the function of x where y is considered a constant
Can you calculate the derivative of $g(x)=5x^3-y^2+3xy$ ?
Exotic_rotor
See y as a constant
So thats 0 and the same for y^2
What is the whole expression then ?
Idk give me some time I will come back ses what I have been cooking up with.
@sage dove do i get it
Do you think i did it right
Why didn’t you change the -y^2 term?
no?
when u partial derivative on X
everything else is a const
so
Y^2
is basicaly like 5^2
became 0 after the first derivative
so like
Hold on is -y^2 =0
when ur doing the partial derivative
yeah
imagine that Y becomes a basic integer
And what happens to the other y in 3x*y
Yeah because there is no * there is - and +
What hold on
Just stop whith imagine y is like 5. What happens to 3x*y did I do it right
$$ f(x,y) = 3xy $$ then $$ \partial_x f(x,y) = 3*y $$
mei
Everything's is good
mei
I think i understand it now
make the $$ \partial_y f(x,y) then $$
mei
Anyway I come back to to show you what i have been cooking up with
okkah
Where tell me
Ok i understand
yeah but since i already gave the answer for that one I asked for the y partial
Nah bro i whact this video on youtube
This calculus 3 video tutorial explains how to find first order partial derivatives of functions with two and three variables. It provides examples of differentiating functions with respect to x or with respect to y using techniques such as the product rule, quotient rule, and power rule. This video contains plenty of examples and practice pr...
You can use the internet to goon or you can use it to learn math
@dim star
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No you did not