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  1. A*****

    Chemistry: Post your doubts here!

    From 1 mole of acid we are getting 1 mole of SO2 and 1 mole of HCl. For 1 mol of SO2, 2 moles of NaOH and for 1 mole of HCl 1 mole of SO2 is required. Therefore, to neutralize the products of 1 mole of acid, 3 moles of NaOH are required. Now apply simple ratio to get the answer :)
  2. A*****

    Mathematics: Post your doubts here!

    That's not specified in the syllabus but questions do come
  3. A*****

    Mathematics: Post your doubts here!

    Actually everyone is right. We all are saying the same thing in different ways :)
  4. A*****

    Mathematics: Post your doubts here!

    You're right
  5. A*****

    Mathematics: Post your doubts here!

    We NEED the domain to calculate the range of the function fx. How can we do this without it?
  6. A*****

    Mathematics: Post your doubts here!

    We have to take the domain of the inner function which is f
  7. A*****

    Mathematics: Post your doubts here!

    Here I've got the answers
  8. A*****

    Mathematics: Post your doubts here!

    No we have to use the domain of f(x)
  9. A*****

    Mathematics: Post your doubts here!

    It's less than 1 not greater...if we use x<1 then the range would be 0<gfx<2/3
  10. A*****

    Mathematics: Post your doubts here!

    You can find them at gceguide.com
  11. A*****

    Mathematics: Post your doubts here!

    Alright thanks!!
  12. A*****

    Mathematics: Post your doubts here!

    Oh yes I've looked into it your value for b is correct For 8 iv) first see the domain of the inner function f(x) which is x<2 and then its range for this domain which is f(x)>3 Now the range of f will be domain of g and according to this domain the range of g(x) will be the range of gf(x). From...
  13. A*****

    Mathematics: Post your doubts here!

    I think you've confused some numbering..... I've got some different answers. For 4 ii) x= 0 max and x=1 min One of the angles in 7 a) is 54.7° not 54.8° according to me...a little difference though but the answer mark will be lost For 7 b) my a is same but the value of b is -4 For 8 iv) my...
  14. A*****

    Mathematics: Post your doubts here!

    First consider the situation if the letter A is in between...MAM would be 1 object and these 3 letters can't switch positions so that would be 7!/2!= 2520 If it's some other letter then there'd be 4 options for the middle letter so no. of arrangements would be 4x 7!/3!= 3360 Adding both gives 5880
  15. A*****

    Mathematics: Post your doubts here!

    I'll solve it tomorrow and get back to u!
  16. A*****

    Mathematics: Post your doubts here!

    And sometimes obviously you've got the limits so c is not needed
  17. A*****

    Mathematics: Post your doubts here!

    Thanks man!
  18. A*****

    Mathematics: Post your doubts here!

    Alright and will division do the reverse? And what if it is multiplied by a complex number?
  19. A*****

    Mathematics: Post your doubts here!

    Do u have notes of geometrical effects of multiplication and division of complex numbers?
  20. A*****

    Mathematics: Post your doubts here!

    I could see the A* at risk that's why
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