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  1. S

    Mathematics: Post your doubts here!

    Heey I still haven't got a reply from my moms' friend but I was thinking that I think the question is pretty simple like they said domain has to be greater than 1, therefore it can't be 0, and actually we were confused with what domain to take but since they said x>1 and we know f(x) range will...
  2. S

    Mathematics: Post your doubts here!

    Yes, that's the thing, I think your answer is correct tho, I'll ask my mom's friend to help out so we could be sure, and I'll inform you :)
  3. S

    Mathematics: Post your doubts here!

    4) I wrote an 8 instead of 0 by mistake so I took the wrong values, yes your answer is correct. 7) I think I got it 54.8 roundings it to 3sf but I really don't remember tbh, and I got b=2 If you actually try -4 you'll get y=0, but I think you took 2/3pi which is wrong because t (in my pic)...
  4. S

    Mathematics: Post your doubts here!

    I dont take S2 but look into this link https://www.physicsandmathstutor.com/a-level-maths-papers/
  5. S

    Mathematics: Post your doubts here!

    Thank youu
  6. S

    Mathematics: Post your doubts here!

    PURE MATHS 1 FEB/MARCH ANSWERS (MINE) 1) P=6 2) f(x)=2/9x^3-x^2+2 3)118 cm^2 4)dy/dx=-2(2x-1)^-2 +2 d^2y/dx^2=8(2x-1)^-3 5) x=8 in minimum and x=1 is the maximum 6) a) q= 2 or -11/3 b) 130.7 7) b) p=8 and n=42 8) 54.8 and 125.3 b)sq root 3 +tan (2x) 9) a) k=2 b) f inverse is 2- square...
  7. S

    Mathematics: Post your doubts here!

    Did anyone solve P1 paper? Or did you find the ms? And question: Do Feb/March papers give an idea about May/June session paper? Because the paper was really easy and I don't think that's how it'll go this year. I think stats will be tricky this year,
  8. S

    Mathematics: Post your doubts here!

    Ahhh thanks Its harder when you have to visualise it :')
  9. S

    Mathematics: Post your doubts here!

    HELP PLEASE IM JUST CONFUSED IN A VERY SMALL PART So this question is like the last part of a long question and ill summarise things here There are two parallel lines, one is a tangent to the curve and has the eqn y=0.5x and another lone called AB that intersects the X axis with eqn: (x-1)/2...
  10. S

    A level Biology: Post your doubts here!

    For active transport to occur, we need specific carrier proteins that are only found in the cell surface membrane, plasmodesmata is nothing but an empty desmotubule (tube-like structure that connects cells/companion cell and phloem sieve tube) They have nothing with active transport, they...
  11. S

    A level Biology: Post your doubts here!

    Okay so basically while answering this I'll assume you understand why its less turgid, water potential can either be +/-/0, when its 0 this means I have a pure water solution (isotonic), if you have more solutes it becomes more negative since now water gradient is lesser (they're less likely to...
  12. S

    A level Biology: Post your doubts here!

    The correct answer I guess is A This is the explanation: As you increase the temperature, the rate of enzyme working becomes more efficient as it reaches more towards the optimum temperature, therefore it will produce more enzyme-substrate complex and then product, but after the optimum...
  13. S

    A level Biology: Post your doubts here!

    When you define endocytosis, we say it is the inwards folding of the cell surface membrane with the help of the cytoskeleton, which will form a vesicle containing the molecule in and fusion by cytokinesis using ATP. It is basically through the phospholipid bilayer, and in such cases when you...
  14. S

    A level Biology: Post your doubts here!

    It's wrong to say the ke is the highest because even above the given temperature the ke will increase, point B was rather supposed to be that both the enzyme and substrate posses the activation energy, therefore, they are at their optimum working. And it's obvious why the rest except A is wrong...
  15. S

    A level Biology: Post your doubts here!

    Ugh omg I guess I confused a bit with the wordings Tysmm
  16. S

    Mathematics: Post your doubts here!

    Okay so lets look at this It might seem confusing if youre stressed because thats what happened to me They clearly said ratio or CB:BY is 1:2 therefore we can say that BY is 2/3 of CY so you can say (CY / CO)= (BY / BA) Since BY is 2/3 of CY then (CY / CO)= (2/3CY / BA) Reconstruct the...
  17. S

    Mathematics: Post your doubts here!

    Okay, first of all, keep in mind the fact that they are similar Use this concept: (CY / CO) = (BY / BA ) They said the ratio of CB: BY is 1:2, therefore, you can say that CB magnitude is 1/3 of CY ) I kept getting AB as 2c instead of 4c I took 0607 last year and you take another code, check if...
  18. S

    Mathematics: Post your doubts here!

    I'm sorry I forgot. I believe its somewhere between 2005 and 2008. It is not straight forward you literally have to calculate the probability and you can't use normal distribution concept but actually they kind off gave you a hint, the part before it they asked to calculate the probability when...
  19. S

    Mathematics: Post your doubts here!

    STATS (Can someone help?) The random variable X has the distribution B (20,p) Given that p=0.7 and P(X≥x) >0.1, find the greatest possible value of x. Is there a straight forward method rather than the long method of trying? The answer is 17 just in case. Thanks :)
  20. S

    Chemistry: Post your doubts here!

    O AND CL+ - There electronic configuration is as follows: [He]+2s2 2p4 , [He]+2s2 2p4 (since chorine lost one e ) F+ AND Ga- - There electronic configuration is as follows: [He]+2s2 2p4 , [He]+2s2 2p6, 3s2 3p6 , 4s2 , 3d10 , 4p2 To actually understand this, you want to draw the orbitals and...
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