### 2023 MI PU3 P2 Q2

2023 MI PU3 P2 Q2 (a) Given that $text{f}left( x right)={{sec }^{2}}x$, find $text{f},text{ }!!’!!text{ }left( x right)$ and $text{f},text{ }!!’!!text{ }!!’!!text{ }left( x right)$. Hence, find the Maclaurin series

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# Maclaurin and Power Series

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Timothy Gan

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2023 MI PU3 P2 Q2

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2019 TJC P1 Q5

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2023 YIJC P2 Q5

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2013 HCI P2 Q2

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2017 HCI P1 Q7

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2019 NJC P1 Q4

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2017 AJC P1 Q5

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2009 TPJC P1 Q11

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2015 MJC P1 Q7

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2017 JJC P1 Q10

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Timothy Gan
19th June 2024

2023 MI PU3 P2 Q2 (a) Given that $text{f}left( x right)={{sec }^{2}}x$, find $text{f},text{ }!!’!!text{ }left( x right)$ and $text{f},text{ }!!’!!text{ }!!’!!text{ }left( x right)$. Hence, find the Maclaurin series

Timothy Gan
19th June 2024

2019 TJC P1 Q5 In geometric optics, the paraxial approximation is a small-angle approximation used in Gaussian optics and ray tracing of light through an optical system such as a

Timothy Gan
19th June 2024

2023 YIJC P2 Q5 In the triangle $ABC$, $AC=1$, angle $BAC=x$ radians and angle $ACB=frac{1}{6}pi $ radians (see diagram). (a) Show that $AB=frac{1}{cos x+sqrt{3}sin x}$. [3] (b) Given that $x$

Timothy Gan
18th June 2024

2013 HCI P2 Q2 (i) Given that $ln left( ky right)={{tan }^{-1}}left( kx right)$, where $k$ is a non-zero constant, show that $left( 1+{{k}^{2}}{{x}^{2}} right)frac{text{d}y}{text{d}x}=ky$. By further differentiation of this

Timothy Gan
20th February 2024

2017 HCI P1 Q7 (i) It is given that $ln y=2sin x$. Show that $frac{{{text{d}}^{2}}y}{text{d}{{x}^{2}}}=-yln y+frac{1}{y}{{left( frac{text{d}y}{text{d}x} right)}^{2}}$. [2] (ii) Find the first four terms of the Maclaurin series for

Timothy Gan
16th February 2024

2019 NJC P1 Q4 (i) Show that $frac{p{{x}^{2}}+left( 4p-q right)x+left( 4p+q right)}{left( 1-x right){{left( 2+x right)}^{2}}}=frac{p}{1-x}+frac{q}{{{left( 2+x right)}^{2}}}$. [1] (ii) Find the values of $p$, $q$ and $r$ such that

Timothy Gan
15th February 2024

2017 AJC P1 Q5 A curve $C$ has equation $y=text{f}left( x right)$. The equation of the tangent to the curve $C$ at the point where $x=0$ is given by $2x-ay=3$

Timothy Gan
2nd February 2024

2009 TPJC P1 Q11 (i) Given that $y={{text{e}}^{{{tan }^{-1}}x}}$, find $frac{text{d}y}{text{d}x}$ and show that $left( 1+{{x}^{2}} right)frac{{{text{d}}^{2}}y}{text{d}{{x}^{2}}}+left( 2x-1 right)frac{text{d}y}{text{d}x}=0$. Obtain the Maclaurin series for ${{text{e}}^{{{tan }^{-1}}x}}$ up to and including

Timothy Gan
19th January 2024

2015 MJC P1 Q7 (a) Given that $text{f}left( x right)={{text{e}}^{sin ax}}$, where a is a non-zero real constant, find $text{f}left( 0 right)$, $text{f{ }’}left( 0 right)$ and $text{f{ }”}left( 0

Timothy Gan
19th January 2024

2017 JJC P1 Q10 A laser from a fixed point $O$ on a flat ground projects light beams to the top of two vertical structures $A$ and $B$ as shown