Mathematics: Post your doubts here!

[Thought blocker]

I have no idea what you are saying

Forget it.

 

[♣♠ Magnanimous ♣♠]

♣♠ Magnanimous ♣♠ Resonance did a good job. With help of Dharmendra sir notes I am able to solve hardest questions of A2 level. We were wrong possibly. He taught us A2 syllabus. But now its useful. I solved this when I started my AS.

Resonance is helping me in Biology a lot
CBSE biology syllabus is ALMOST TOTALLY different than As and A level but I am able to do it

 

[Charlotte20102013]

Can someone help me with this question?
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_qp_12.pdf
Q11 (V)
The function g : x → 4 − 3 sin x is defined for the domain 1/2π ≤ x ≤ A.
(iv) State the largest value of A for which g has an inverse.
(v) For this value of A, find the value of g−1.

Thanks!

 

[Thought blocker]

Resonance is helping me in Biology a lot
CBSE biology syllabus is ALMOST TOTALLY different than As and A level but I am able to do it

In short, we were wrong. Eh?
But at our point of you of As level they should teach us for our board than CBSE @@@

 

[Thought blocker]

Can someone help me with this question?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_12.pdf
Q11 (V)
The function g : x → 4 − 3 sin x is defined for the domain 1/2π ≤ x ≤ A.
(iv) State the largest value of A for which g has an inverse.
(v) For this value of A, find the value of g−1.

Thanks!

I am getting till Sin−1 (1/3) but not that 2.8 Why?
RoOkaYya G and Rutzaba help.
ZaqZainab its P1 help.

 

[RoOkaYya G]

I am getting till Sin−1 (1/3) but not that 2.8 Why?
RoOkaYya G and Rutzaba help.
ZaqZainab its P1 help.

iv)
value of A is the nxt value of turning point i.e 3pi/2
this is coz it is a 1-1 function (g has an inverse) so line y=k cuts the graph at one place only n this happens at max n min point only

v)
4-3sinx=3
-3sinx=-1
3sinx=1
sinx=1/3

key angle = sin inverse (1/3) =0.340

x = pi - 0.340 = 2.80 u do this coz limit is b/w 0.5 pi to 1.5 pi hence its found in 2nd quadrant

 

[shaminou]

FOR MECHANICS:
http://www.mathsrevision.net/
http://www.examsolutions.net/

 

[Thought blocker]

iv)
value of A is the nxt value of turning point i.e 3pi/2
this is coz it is a 1-1 function (g has an inverse) so line y=k cuts the graph at one place only n this happens at max n min point only

v)
4-3sinx=3
-3sinx=-1
3sinx=1
sinx=1/3

key angle = sin inverse (1/3) =0.340

x = pi - 0.340 = 2.80 u do this coz limit is b/w 0.5 pi to 1.5 pi hence its found in 2nd quadrant

Thanks.

 

[Thought blocker]

FOR MECHANICS:
http://www.mathsrevision.net/
http://www.examsolutions.net/

 

[RoOkaYya G]

Thanks.

welcome kiddo

 

[♣♠ Magnanimous ♣♠]

In short, we were wrong. Eh?
But at our point of you of As level they should teach us for our board than CBSE @@@

Sahi bat hain
But jo hota hai ache ke liye hota hain

 

[Thought blocker]

Sahi bat hain
But jo hota hai ache ke liye hota hain

Correct.

 

[Wolfgangs]

Can someone give me the answers for these questions?

 

[Thought blocker]

Can someone give me the answers for these questions?

Physicist

 

[3l_general]

Through all the velocity -time graph question (mechanics) , In the question straight horizontal road is mentioned . What does this statement indicates.

 

[mmmmmm]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w06_qp_4.pdf, Q:2,
help me wid this one.

 

[RoOkaYya G]

i)
resolve the forces
R (normal reaction)= 5sin30

friction +5cos30= 6
friction=1.67 N

ii)
F= mew (R)
mew = F/R
=1.67/5sin30
= 0.68

 

[Emma23]

Hi can someone help me with question 10 part 2..

 

[RoOkaYya G]

Hi can someone help me with question 10 part 2..

sry i suck at vectors
Thought blocker help

 

[Rutzaba]

blocker krlo ge>?