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how to integrate 1/(cos2x)^2?

6) Explain how NaHCO3 is useful as a safety measure to minimise damage in chemical spills. Provide four points in support of your answer. 7)Write the formulae of the amphiprotic species in a solution of tetraprotic pyrophosphoric acid, H4P2O7. i dun get what question 7 is asking. find...

this is my introductory paragraph. The day was the fourth of April. Ken Emerson packed his diminutive luggage full of old clothes and a rigged yellowing photo. He was worn out when he arrived at the bus stop after countless pushes he made to his wheelchair, desperately forcing his way with...

The day was the fourth of April. Ken Emerson packed his diminutive luggage full of old clothes and a rigged yellowing photo. He was worn out when he arrived at the bus stop after countless pushes he made to his wheelchair, desperately forcing his way with his luggage on his lap. Ken was...

hello, i ran into a bit of trouble in understanding this module. can someone explain to me the concepts of modernism, humanist, medieval, postmodernism, capitalism, individualism ETC omg .. i have no idea what they mean, well, only a bit. I dun no how to apply it to my texts . PS: my texts...

My answer: Equilibrium will try to remove the heat by dissolving more H2O thus shifting to the forward reaction. It will increase both OH- and H3O+ so there’s no change in pH I got the answer wrong coz answer says H3O+ will increase so solution will be more acidic so pH decreases. I dun...

could someone edit my short story .. post a comment and i PM you

i dun understand the first question.. wot is it asking?.. can someone write an answer for me? its 6 marks .. omg.. and theres not much u can write about.. the second one is also hard..

first one is haarrdd

a) distinguish between flexible peg and fixed exchange rate b) Outline at least 2 risks of having a fixed exchange rate c) would $A appreciate/depreciate if there was a rise in interest rates overseas? explain. d) Briefly explain how balance of payments influence the exchange rate thx

find the equation of the tangent to the hyperbola x^2-4y^2 = 16, given that these tangents are parallel to the line x- y root 3 +3 = 0 i dunno how to do this using cartesian equation of tangent .. need help.. thx

whoops.. posted in the wrong forum.. well anyways .. i got a eng question as well.. can someone give me a brief introduction to chaucer's pardoner's tale and prologue.. like, the story line.. also, im quite confused about the pardoner's tale, cantebury tale, prologue .. are they related..

heres the question :) i dunno why i cant get 0 if m don't equal to n

okay, heres the question: 16) the points P and Q on thr parabola x=2at, y=at^2 have parameters p and q respectively. a) Find the midpoint M of the chord PQ, the point T on the parabola where its tangent is parallet to PQ, and the point I where the tangents at P and Q intersect. b) Show...

a) Draw the region between the parabola y^2 = 4ax and latus rectum x=a . b) Hence, find the dimensions of the rectangle with maximum area in this region. thx =)

would a packet of red rock deli, sweet chilli and sour cream (mmmmnn yumm :P) chips inflate when it is brought on an areoplane and risen for a while? its random but the answer is yes from first hand experience :P but dunno why though..

hi.. im playing the piano. does anyone have the piano score for this song? "apologise" by timberland ? thx :)

this is an 6 mark question so make sure u answer as much as u can :) Q: Evaluate the michelson-morley experiment A : ? need help plz.. i cant seem to write anything Also, another question. From the length contraction formula, is the length measure in cms? m? .. the book doesnt say...

The method i used (used graph B) Area = xy = x root. (4-x^2) [subbing y = root. (4-x^2) ] let derivative = 0 and u'll get x = root 2 and u'll get y = root (3.5) The second method i used (used graph A ) Area = 2xy = 2x root.(4-x^2)...

for those equations tht has "a" (for acceleration due to gravity) should i put -9.8 or +9.8 ?? For a projectile that is parabolic, do we change the signs of 9.8 when we go up and when we go down? or do we keep the sign of 9.8 constant .. . ...