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SingaporeAdditional MathematicsQuick questions

Integration

Quick questions on Definite integrals: N(A)-Level Additional Mathematics

5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is sign slip with a negative lower value?
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As above, 12−(−1)=1312 - (-1) = 13; subtracting a negative adds.
What is not showing the integrated function?
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Jumping straight to a number loses method marks; always show the square-bracket line.
What is q1?
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Evaluate ∫012x dx\displaystyle\int_0^1 2x\, dx. [2 marks]
What is q2?
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Evaluate ∫123x2 dx\displaystyle\int_1^2 3x^2\, dx. [2 marks]
What is q3?
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Evaluate ∫02(x+1) dx\displaystyle\int_0^2 (x + 1)\, dx. [3 marks]

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