Just one question I did not understand on my calculus worksheet.
If y= 3/4+x^2 then dy/dx = ?
3/2x?

Just one question I did not understand on my calculus worksheet.
If y= 3/4+x^2 then dy/dx = ?
3/2x?
Hey fancy shoers
That looks like a typo to me  the question should read
If y= 3/4*x^2 then dy/dx = ?
Well IF Y = 0.75 X^2 then dy/dx= 1.5x which is the same.
Rare for me to post in maths, but I'll make an exception, I agree with RR.
its actually this. sorry i did not put brackets if y=3/(4+x^2) then dy/dx = ?
Set z = 4 + x<sup>2</sup>. What is dz/dx? Show you are trying, even if its wrongOriginally Posted by FancyShoes
Ah use the quotient rule or the chain rule  what ever you feel more comfortable with really. Your answer is definitely not correct btw.
differentiate it from first principles (if you are not yet familiar with Quotient/chain)  it'll be good practice anyway.
let's say f(x) = 1/(5x+3)
I wrote that one out on paper, I don't know where all the maths symbols are but I got
dy/dx = 5/(5x+3)^2
River rat will tell if I've made a balls up.....
It looks like homework though, so you'll have to do it yourself,
Looks fine to me Megabrain  though doing the original question by first principles looks very hairy!
ya I went and asked my teacher answer was 6x/(4+x^2)^2 if anyone wanted to know. Ya he told me to use the chain rule
I hope he did not say that 6x/(4+x^2)^2 was the answer! Eish.Originally Posted by FancyShoes
« translation in English of "Ã* un facteur prÃ¨s"  Vector spaces » 