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thank you so much!!! :)

so I have the equation 2x^3 +3x^2 +x -5=0 when I sub in x=1/square root (y) then the answer should be 25y^3 -31y^2 +5y -4=0 but I cant seem to get that also when I sub in x=root y, I should get 4y^3 -5y^2 +31y -25=0 but how thank u

I differentiate both sides and apply P'(x)=P''(x)=0 ?

The equation x^4 -5x^3 -9x^2 +ax +b =0 has a triple root. Find a and b and hence all roots of this equation.

thank you for the help!! <3

oh sorry - I meant "find y as a function of x"

help pls a) if d^2y/d^2x = 6x+4 and dy/dx=8 and y=2 when x=1, find your site a function of x b) if f''(x)=x, f'(2)=1 and f (3)=0, find f (x) c) if f''(x) =-2x and the curve y=f (x) has a stationary point at (2,6), find the equation of this curve thank uu

what pathway? Could I do medicine and major in Psych or Neuroscience so I can get a masters? or should I do psychology and then a masters in it? or would it be better to do neuroscience through medicine, to have more vast knowledge?

ooh thank you for explaining!! sucks that its so much memorising haha but I like how you broke it into simple points :3

how would I account for ionisation rate Calculate the pH of 0.05 mol L-1 citric acid if it has an ionisation rate of 50% thank you :)

just wondering - for a dotpoint like this Assess the evidence which indicates increases in atmospheric concentration of oxides of sulfur and nitrogen should I remember statistics and stuff? or do they usually not ask/need that? like even for internals, could they ask smth for which we would...

ah you both are legends thank you omg <3

can someone please explain tis equation in terms of water ionisation? H2O (l) -->H+ (aq) + OH-(aq) also, if acid ionises in water, then it gives up a proton - so how do we get H3O+? shouldn't it be H3o-

specifically King Hnery IV part 1 would The Trial by Kafka be good? And what about Frankenstein by Mary Shelley thank youu :)

http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2010exams/pdf_doc/2010-hsc-exam-chemistry.pdf 31)a)I) thank you

so do I make dy/dx =0 -----> I found the SP to be (0,1) do I now find inflection point edit: solved

thank you for the help!!! <3

for the relation x^3 + y^3 =1 a) find the x and y intercepts do I factorise to (x-1)(x^2 + x +1) now what? :( b) findthe axis of symmetry by exchanging x and y c) differentiate implicitly and find the stationary and critical point/s d) discuss the behaviour of the curve as x tends...

done :)

where is u