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I just edited it, thanks

can someone please explain the steps for each question. It will be great, thank you :) Differentiate: a) xlnx b)lnx/x-2 c) e^xlnx

No, i wish it was substrate concentration. It's enzyme concentration. Thanks anyway :)

I have to start this experiment from scratch. The questions states "Test the effect of the enzyme concentration on the activity of rennin enzyme with (milk) caseinogen as the substrate. If anyone could give any ideas about how to write the method and the variables. It would be great help!

Find the area enclosed between the curves y=-x^2 + 2x + 4 and y=x^2.

What's life without mistakes, thanks for your help and thanks Nailgun :)

Differentiate : 2X^2 +1/ 3X^2-4 Hence evaluate ∫ between the limits 1 and 0, x/(3x^2 -4)^2

Guys, sorry about that. Don't worry, the question is done and dusted ..."faster than the speed of light"!

Thanks for the heads up :p.

“ 6a) differentiate 2x^2+1/ 3x^2 -4 ( i got the answer for this -22/(3x^2-4)^2 b) Hence evaluate(q. on the board) ”

its better to put it in surds, than decimal points

Tell me about it :/

Find the exact area bounded by the parabola y=x^2 and the line y= 4-x

Thank you so much. Just noticed my silly/ stupid mistake:)

I did this question like 10 times, i dont know what im doing wrong. The question is Find the area enclosed between the curves y= (x-1)^2 and y= 5-x^2

Thank you soo much for your help :)

Thank you so much. Sorry, I wrote the 1st question wrong :/, can someone show me how to solve it?

1) The curve y= 2^x is rotated about the x-axis between x=1 and x=2. Use simpsons rule with 3 function values to find the approx of the volume of the solid formed. 2) a) Differentiate (x^4-1)^9 (i got the answer for this 36x^3(x^4-1)^8 b) Hence evaluate ∫ x^3(x^4 -1)^8 dx

Ellyse in year 12 and wants to buy a car when she finished school. She has saved a total of 8000. Ellyse sets up a car fund and deposits her savings in $P INTO THE FUND on the 1st of January 2014. The fund is paying 6% per annum in interest which is compounded monthly . a) If Elyse makes no...

A ball thrown from the top of the tallest building the Buruj Khalifa in Dubai falls 3m the 1st sec, 9m the 2nd sec and 15 in the 3rd sec. a) How far does the ball fall in the 15th sec If the height of the Burij Khalifa is 828 m, find how long it would take for the ball to hit the ground.