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roadrages way is exactly the same as the other one its just he did the boys and girls seperatly its the same, just a little bit longerer

the x button

touch harsh not everyones great at maths atleast he's asking to find out

ok so we need to find dv/dt and we know dr/dt and we can find an expression for dv/dr and dv/dt= dv/dr . dr/dt and v=pir2h dv/dr= 2pirh sub in r=19 and h=2000 as they need to be in the same units then times that by 1.2X10-3mms-1 answer i got is about 287mm3s-1

so i just found out i cant remember much about c.n can someone give me a hint to the 1st part please?? damnitt i used to like complex numbers, i didnt think i'd forget it! EDIT: don't worry my brain decided to work lol

its the limit as h approaches 0 if it was infinity you wouldn't have a tangent

u have lim [(x+h)^2 +(x+h) - (x^2 +x)]/h h>0 lim [x^2 + 2xh +h^2 +x+h - x^2 - x]/h h>0 lim [h(2x +1 +h)]/h h>0 lim 2x + 1 +h h>0 =2x +1

call it 6 unit maths and im all for it

yeah definitely only equal to zero

haha that is such an exaggeration

was thinkin the same thing

Anyone?? pleaseee :D

yeah you cant do a quarter because the left hand side has a different radius kinda thing i think

hey can someone please help me out with this question? its Q10 of 6.3 in terry lees book "the region enclosed by the rhombus ABCD, where A(0,2) B(1,0) C(0,-2) D(-1,0) is rotated about the line x=2 to form a solid. Find the volume" i broke it up 2 integrals above the x-axis then found each...

i write down everything i can see from the diagram and then usually i find that ive solved it thru that i also try to solve it in my reading ttime

youre in year 10?

and you can still use the quotient rule for the 2nd question its just unnessecary but u should still get the correct derivative

tell them not to put multiple choice in the tests.

except the line needs to be dotted as its less than but that would be really hard to do on paint