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http://files.physicsandmathstutor.com/download/Maths/A-level/FP1/Papers-Edexcel/January%202010%20QP%20-%20FP1%20Edexcel.pdf

so i found the interval of width of 0.025 to be 1.35 and 1.375 however the answer has an inequality in it.

Can someone help please?
Original post by jakaloupe
http://files.physicsandmathstutor.com/download/Maths/A-level/FP1/Papers-Edexcel/January%202010%20QP%20-%20FP1%20Edexcel.pdf

so i found the interval of width of 0.025 to be 1.35 and 1.375 however the answer has an inequality in it.

Can someone help please?


Website is down but I'm assuming it's asking for a root within an interval, which makes sense because 1.35<α<1.3751.35<\alpha <1.375 is the interval within which the equation equals 0 or whatever it's asking for.
Reply 2
Original post by RDKGames
Website is down but I'm assuming it's asking for a root within an interval, which makes sense because 1.35<α<1.3751.35<\alpha <1.375 is the interval within which the equation equals 0 or whatever it's asking for.


hmm works for me see this then

Original post by jakaloupe
hmm works for me see this then



Then I was right. f(α)=0f(\alpha)=0 therefore we are looking for x=αx=\alpha between x=1.3x=1.3 and x=1.4x=1.4
...or to put it differently; 1.3<α<1.41.3<\alpha<1.4

You are bisecting this interval until its width is 0.025 which is where you got 1.35 and 1.375 from.
Hence α\alpha lies between these to values. Or to put it differently; 1.35<α<1.3751.35<\alpha<1.375
Reply 4
Original post by RDKGames
Then I was right. f(α)=0f(\alpha)=0 therefore we are looking for x=αx=\alpha between x=1.3x=1.3 and x=1.4x=1.4
...or to put it differently; 1.3<α<1.41.3<\alpha<1.4

You are bisecting this interval until its width is 0.025 which is where you got 1.35 and 1.375 from.
Hence α\alpha lies between these to values. Or to put it differently; 1.35<α<1.3751.35<\alpha<1.375


ah ok thanks ^-^

have the make scheme too for reference
Original post by jakaloupe
ah ok thanks ^-^

have the make scheme too for reference


Looks like you got the answer wrong.

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