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what is your confusionhello Sir ,can you please answer s11 v42 q8 part c ? thanks alot !!
they said that 1/3(pi)(x^2)[y] is equal to W (by substituting x and y in the formula of cone)
thank you so muchthey said that 1/3(pi)(x^2)
so a similar cone with 3x radius means that radius is x*3 equal 3x and height y*3 equal 3y.. now substitute 3x as radius and 3y as height in the formula of cone so 1/3(pi)(3x)^2(3y) which is equal to 1/3(pi)(9x^2)(3y).. but 1/3(pi)(x^2)
W(9)(3) which is 27W..
cii is similar instead just substitute 2x in radius and y in height in the formula
my pleasure
it is really hard to explain stuff over here if u want to clear more doubts just give me your fb profile so we can discuss there
sorry i don't use Fbmy pleasure
add me on yahoo if you use yahoo messenger [email protected]
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s12_qp_43.pdf can you also help me with q 7 emy pleasure
so u only multiply 4 wit 2 ..y not .. with the denominatore x?
well its a graph question 2 problems i need to draw and i can't explain without the graph the only thing i can tell you is that from the curve select a point, and if you draw a tangent at this point the gradient (rise/run) must be 3
bt how do i know at what point will the gradient be 3 should i like take all the points that will waste my time
there is a differenciation key d()/dx use this key and place the equation of line between brackets and use random values of x until u get 3 or very close to 3 then draw a tangent there and use those coordinates well this function is NOT in our syllabus and used in add math and A levels.. so might be a bit confusing for you but thats how i work this type of questions i just hope this model of the calculator is allowed for the exam
its very easy... take a line parallel 2 the 1 fr the 1 in previous ques!!
can i do it in the calculator where what button i did not actually get you and i took this question from IGCSE
solve for (2x-1)^2=4
in casio fx-991es below the alpha button is the key press shift then the key and do it
well you are right.. i didn't do the previous parts so just told what i could do based only on this partbro... ur methods too long and condusing..use my ...!!1
1/6(20)(20+1)(20+2)
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