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Find the binomial expansion of (3x-2)^4
I'm totally new to this so please write all the steps.
I'm totally new to this so please write all the steps.
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Find the binomial expansion of (3x-2)^4
I'm totally new to this so please write all the steps.
the distance moved by the particle is s= 1/2(10)(2) = 10mM1 Urgent Help Needed Please
7. A particle of mass m kg moves up a line of greatest slope of a rough plane inclined at 21◦ to the
horizontal. The frictional and normal components of the contact force on the particle have magnitudes
F N and R N respectively. The particle passes through the point P with speed 10 m s−1 , and 2 s later it
reaches its highest point on the plane.
(i) Show that R = 9.336m and F = 1.416m, each correct to 4 significant figures.
(ii) Find the coefficient of friction between the particle and the plane.
After the particle reaches its highest point it starts to move down the plane.
(iii) Find the speed with which the particle returns to P.
Please help me for the (iii) only !
[Quoted from Nov 2004 p4]
the distance moved by the particle is s= 1/2(10)(2) = 10m
while the particle is going down the friction force will act opposite to the motion therefore:
F = ma
mgsinθ - F = ma
10msin21.1 - 1.416m = ma
a = 10sin21.1 - 1.416
a= = 2.184 ms^-2
v^2 = u^2 + 2as
v^2 = 0 + 2(2.184)(10)
v = 6.61 ms^-1
i hope this makes sense to u!
Please help me with this one
Find the sum of all odd numbers between 0 and 500 which are divisible by 7.
And this one
Show that the sum 1+3+5+(2n-1) is always a perfect square.
Thnx
need help with question 9 a) may june 2011 paper 12
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf
Thnk u bt cn u plz xplain the second one alsothe largest multiple of 7 less than 500 = 497 (7*71)
so the sum of all multiples of 7 less than 500 =
7 * sum(n=1...71)n = 7 (71)(72)/2 = 497*36 = 17892
the largest multiple of 14 less than 500 = 490 (14*35)
the sum of all multiples of 14 less than 500 =
14 * sum(n=1...35)n = 14(35)(36)/2 = 8820
so the sum of the odd multiples of 7 less than 500 is
17892 - 8820 = 9072
Thnk u bt cn u plz xplain the second one also
It's okI don't know !
Help on P2 questions needed!!! (here @= theta)
Q. The Parametric equation of a curve are
X=2@+cos@ y= @+sin@
0≤@≤2π
1. Find dy/dx in terms of @. (no problem on this one)
2. Show that, at points on the curve where the gradient is 3/4 the parameter @ satisfies an equation of the form:
5sin(@+α)=2 , where the value of α is to be stated.
3. Solve the equation in part(ii) to find 2 possible values of @.
need help with question 9 a) may june 2011 paper 12
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf
whitecorp plz help me with second onePlease help me with this one
Find the sum of all odd numbers between 0 and 500 which are divisible by 7.
And this one
Show that the sum 1+3+5+(2n-1) is always a perfect square.
Thnx
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