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Help please, thanks. ∫dx/[x√(1-x²)]

- What's the difference between amphiprotic and amphoteric? - Equilibrium of carbon dioxide in water: CO2 + H2O <--> H2CO3. Using Le Chetalier's principle, explain what happens when sodium hydroxide is added. - Potassium carbonate is basic. Justify. :eek: Thanks

We're going to be doing titrations for our prac exam. Is there anything I should look out for and be aware of?

The two questions I need help are from Year 12 Cambridge 3U, page 376 Q18. Question is: Prove the following general cases: a) The direct common tangent f two circles touching externally is the geometric mean of their diameters (ie the square of the tangent is the product of the diameters). b)...

Help me with hyperbolas, please. This question is from Terry Lee's book, page 118. Question is: For a point P on the hyperbola x^2/a^2 - y^2/b^2 = 1, using the definiation of the hyperbola, show that |SP - S'P| = 2a, where S and S' are the foci. I looked in the worked solutions and they...

Is there a thread on here explaining the reliability/validity of a website? :/

Does the ranking of your school play a role in your HSC? (Sorry if this is in the wrong section)

Does the ranking of your school play a role in your HSC? (Sorry if this is in the wrong section)