Maths & Physics Help

[twilight]

ok .. look
for the final answer u have to put ur answer to 3 SF but to 1 DP for degrees
so while doing the question put ur answer to 4 SF or 2 DP in case of degrees

hope u get ur answers accurate

[SGVaibhav]

nice
+rep

[unknown]

k is an integer for which the equation f(x) = k has exactly two solutions.
Use the graph to find the two values of k.

wht do u mean by this n ya i require help in d specimen paper q of 2009 maths paper part 4f,g

plz its urgent
thx in advance n ya d ans for phy 2
d q is
(b) Describe how the circuit works as the external light intensity decreases and the lamp
comes on.
its frm oct nov 2008
plz with proper explaination

[astarmathsandphysics]

Am on a mobile phone. Can someone have a go.

[hyebyekadal]

its easy fina a value of x which has 2 values on the y axis as f(x)=y
im not too sure becuase i did this paper long time ago and dont have it with me now so ya i got kinda confused to but look carfully ull find that theres only 2 points on graph line were theres 2 points which have same y value but diff x values .. others have 3 or 1....im in a hurry so..

[unknown]

hey thx fr d help bt plz paul sir if even u can solve d sum n d phy q it wld be better with detailed explaination

[astarmathsandphysics]

You have to draw a horizontal line. Move the line up or down until you just get 2 intersections with the curve, then read the value of y off the y axis.

[hyebyekadal]

hey astar are you teacher? or a student because all these people refer to you as Paul sir!

[astarmathsandphysics]

I am private Tutor. Visit my website.

[unknown]

hm thx u i shal try doing tht sum n if i hva problem then shal soon get back hmmm sir help me d phy q 2 i hv posted tht also as well as d matrices q frm d specimen paper 2009 its 4f,g

[astarmathsandphysics]

Am not at home now.

[ny]

i do have a silly question here.
could anyone please explain to me for this question:

-OCT/NOV 2008 mathematics paper 2( both variants) question 5.it has smthng that i don't really undrstand.i know its about locus but how? my teacher didnt teach us this type of question.thank you.

[yinyang]

place the sharp end of the compass on point B and the pencil on D
then draw a circle with 90 degrees

the arc drawn is the path taken by point D when it is rotated by 90 degrees about point B

[emi]

can any one help me with this physics Question.
M/J 2008 Q4.
(a)- i & ii

thanks

[sweetsh]

which paper emi?