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These are some of the traditional marking abbreviations that will appear in the mark schemes. bod – benefit of doubt. ft – follow through. the symbol will be used for correct ft. cao – correct answer only. cso - correct solution only. There must be no errors in this part of the question to obtain this mark.
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Sets equations equal to each other and attempts to multiply out the bracket or M1 vice versa Collects to one side (may be implied), factorises the x2 terms and obtains printed answer with no errors. There must be an. x 3 2 x 2 2 3 cx c 3 x (1 3 c 2 ) x c. 0 intermediate line of working.
bx + c ) = ( mx + p )( nx + q ), where pq = c and mn = a , leading to x = ... 2. Formula. Attempt to use the correct formula (with values for a, b and c). 3. Completing the square. Solving x 2 + bx + c = 0 : 2 0, = c ± q ± b ± x 2 q ≠ 0 , leading to x = ...
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The angle in degrees (awrt 29.9 ) is A0. M1 (b) Attempts arc formula: In radians uses Arc BD = r 10 ''0.5223'' ''29.9'' In degrees uses Arc BD = 2 r 2 10 360 360 dM1 Dependent upon the arc formula having been used. It is for calculating the perimeter as 8 + arc length.
2. M1 States or implies the gradient of l2 is the same as l1 Eg. y ' ' x c . 3 If the gradient of l2 is incorrect then you must see. Evidence that the gradient used for l2 has been linked with the gradient of l1 For example 2 x 3 y 6 Gradient of l1 is 2 so equation of l2 is y 2 x c.
January 2017 (IAL) MS - C12 Edexcel | PDF | Elementary Mathematics | Teaching Mathematics. January 2017 (IAL) MS - C12 Edexcel - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
C122017 Jan MS - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
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