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Mathematics: Post your doubts here!
Thank you for your reply.. I understand that the line x=3 acts as a line of symmetry since it is the turning point.. but I don't get why A is 6 (If x >= 0). Could you please explain that? Along with the above, I also need help in qn 10 (v) and 11 (iii).. please please help me solve the... -
Mathematics: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s09_qp_1.pdf No. 10 (ii) This question seems easy.. how do you find the value of A? Please help An explanation will be appreciated.. -
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Physics: Post your doubts here!
I get your point partially.. will be waiting for the diagram. Thanks! -
Physics: Post your doubts here!
Yeah.. as it is said in the question: The tension in each cable between A and B and the ship is 4000N. -
Physics: Post your doubts here!
(ii) Draw a vector diagram to scale showing these three forces and use your diagram to find the value of the drag force on the ship. -
Physics: Post your doubts here!
Thanks a lot for your help.. I figured this out before. Part (ii) of the question is bothering me.. -
Physics: Post your doubts here!
Please help me with the question below.. I don't understand how to solve vector questions! A ship is pulled at a constant speed by two boats A and B, as shown in the diagram. The engine of the ship does not produce any force. The tension in each cable between A and B and the ship is... -
Mathematics: Post your doubts here!
I assume you know how to find the integrals of the type (u)^n. Now, to find the integrals of the more complicated forms i.e (ax+b)^n.. you have to use the substitution method in order to convert it into the form (u)^n, which will make it easier to find the integral. I'll explain this in form... -
Mathematics: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s06_qp_1.pdf No. 11 (i) Here's some of my work: k - x = 9 / (x+2) (x+2) x (k - x) = (x+2) x 9 / (x+2) kx - x²2 + 2k - 2x = 9 -x² + kx - 2x + 2k - 9 = 0 b²2 - 4ac > 0 (kx - 2x²) - (4 x -x² x... -
Mathematics: Post your doubts here!
Hmm yeah.. that makes sense. I was wrong about the tangent thingy.. sorry! Thanks a lot for your help.. -
Mathematics: Post your doubts here!
Then you must have checked the marking scheme.. i could do that too :p Btw.. a tangent does not intersect the curve.. -
Mathematics: Post your doubts here!
Thanks.. but why do you have to solve them simultaneously and use the discriminant? -
Mathematics: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s05_qp_1.pdf No. 10 (iv) Please help me solve the question above.. -
Mathematics: Post your doubts here!
Thank you for your reply.. I'm still confused :( Are we dividing just the denominator by 3 or the whole term? 3/2 divided by 3 = 3/6 ! If you don't mind.. can you please please show the working.. -
Mathematics: Post your doubts here!
Thanks a lot.. ur amazing! I understood fully till step 3.. but I don't get why you differentiated the term in the bracket and divided the whole term by the answer. Secondly, in step 6, I don't understand why you multiplied 1.5 by 3.. please explain the steps 4, 5, 6 & 7. I know I'm... -
Mathematics: Post your doubts here!
Please help me solve the question above (I'll appreciate a step-by-step explanation). Thanks! -
Mathematics: Post your doubts here!
Find the definite integral of √(5x + 4) from x = 0 to x= 1 This question seems easy but I'm not able to solve it.. please help! Thanks! -