Quiz about Ffeithiau Blwyddyn 13 Uned 3

Question 1

Hyd arc =

Accepted Answer

$$r	heta$$

Answer

$$d	heta$$

Answer

$$\frac{1}{2}r^2 heta$$

Answer

$$\frac{1}{2}r^2\sin heta$$

Question 2

Arwynebedd sector =

Accepted Answer

$$\frac{1}{2}r^2 heta$$

Answer

$$r	heta$$

Answer

$$d	heta$$

Answer

$$\frac{1}{2}r^2\sin heta$$

Question 3

Arwynebedd triongl (mewn radiannau) =

Accepted Answer

$$\frac{1}{2}r^2\sin heta$$

Answer

$$r	heta$$

Answer

$$d	heta$$

Answer

$$\frac{1}{2}r^2 heta$$

Question 4

$$\sec heta=$$

Accepted Answer

$$\frac{1}{\cos heta}$$

Answer

$$\frac{1}{\sin heta}$$

Answer

$$\frac{1}{ an heta}$$

Question 5

$$\operatorname{cosec} heta=$$

Accepted Answer

$$\frac{1}{\sin heta}$$

Answer

$$\frac{1}{\cos heta}$$

Answer

$$\frac{1}{ an heta}$$

Question 6

$$\cot heta=$$

Accepted Answer

$$\frac{1}{ an heta}$$

Answer

$$\frac{1}{\cos heta}$$

Answer

$$\frac{1}{\sin heta}$$

Question 7

$$\sec^2 heta=$$

Accepted Answer

$$1+ an^2 heta$$

Answer

$$1+\sin^2 heta$$

Answer

$$1+\cos^2 heta$$

Question 8

$$\operatorname{cosec}^2 heta=$$

Accepted Answer

$$1+\cot^2 heta$$

Answer

$$1+ an^2 heta$$

Answer

$$1+\sin^2 heta$$

Question 9

$$\sin2 heta=$$

Accepted Answer

$$2\sin heta\cos heta$$

Answer

$$\sin^2 heta$$

Answer

$$\cos^2 heta$$

Question 10

$$\cos2 heta=$$

Accepted Answer

$$\cos^2 heta-\sin^2 heta$$

Accepted Answer

$$2\cos^2 heta-1$$

Accepted Answer

$$1-2\sin^2 heta$$

Question 11

Pan mae $$\frac{ ext{d}^2y}{ ext{d}x^2}>0$$ mae'n...

Accepted Answer

pwynt minimwm

Answer

pwynt macsimwm

Answer

methu dweud, angen ymchwilio bellach

Question 12

Pan mae $$\frac{ ext{d}^2y}{ ext{d}x^2}<0$$ mae'n...

Accepted Answer

pwynt macsimwm

Answer

pwynt minimwm

Answer

methu dweud, angen ymchwilio bellach

Question 13

Pan mae $$\frac{ ext{d}^2y}{ ext{d}x^2}=0$$ mae'n...

Accepted Answer

methu dweud, angen ymchwilio bellach

Answer

pwynt minimwm

Answer

pwynt macsimwm

Question 14

Os mae $$y=e^{f\left(x ight)}$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$f$$

Answer

$$e^{f\left(x\right)}$$

Answer

$$\frac{e^{f\left(x\right)}}{f$$

Question 15

Os mae $$y=a^{f\left(x ight)}$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$f$$

Answer

$$a^{f\left(x\right)}$$

Answer

$$\frac{a^{f\left(x\right)}}{f$$

Question 16

Os mae $$y=\ln\left(f\left(x ight) ight)$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$\frac{f$$

Answer

$$e^{f$$

Answer

$$\frac{e^{f\left(x\right)}}{f$$

Question 17

Os mae $$y=\left(f\left(x ight) ight)^n$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$n imes\left(f\left(x ight) ight)^{\left(n-1 ight)} imes f$$

Answer

$$\left(f\left(x\right)\right)^{\left(n-1\right)}$$

Answer

$$f\left(x\right)f$$

Question 18

Os mae $$y=\sin\left(f\left(x ight) ight)$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$f$$

Answer

$$\cos\left(f\left(x\right)\right)$$

Answer

$$-\cos\left(f\left(x\right)\right)$$

Question 19

Os mae $$y=\cos\left(f\left(x ight) ight)$$ , beth yw $$\frac{ ext{d}y}{ ext{d}x}$$

Accepted Answer

$$-f$$

Answer

$$-\sin\left(f\left(x\right)\right)$$

Answer

$$\sin\left(f\left(x\right)\right)$$

Question 20

$$\int_{ }^{ }e^{f\left(x\right)}\ dx=$$

Accepted Answer

$$\frac{e^{f\left(x\right)}}{f$$

Answer

$$e^{f\left(x\right)}+c$$

Answer

$$\frac{f$$

Question 21

$$\int_{ }^{ }\left(\frac{1}{f\left(x\right)}\right)\ dx=$$

Accepted Answer

$$\frac{\ln\left|f\left(x\right)\right|}{f$$

Answer

$$\ln\left|f\left(x\right)\right|+c$$

Answer

$$\frac{f$$

Question 22

$$\int_{ }^{ }\left(f\left(x\right)\right)^n\ dx=$$

Accepted Answer

$$\frac{\left(f\left(x\right)\right)^{\left(n+1\right)}}{f$$

Answer

$$\frac{\left(f\left(x\right)\right)^{\left(n-1\right)}}{f$$

Answer

$$\left(f\left(x\right)\right)^{\left(n+1\right)}+c$$

Question 23

$$\int_{ }^{ }\sin\left(f\left(x\right)\right)\ dx=$$

Accepted Answer

$$-\frac{\cos\left(f\left(x\right)\right)}{f$$

Answer

$$\frac{\cos\left(f\left(x\right)\right)}{f$$

Answer

$$-\frac{\cos^2\left(f\left(x\right)\right)}{f$$

Question 24

$$\int_{ }^{ }\cos\left(f\left(x\right)\right)\ dx=$$

Accepted Answer

$$\frac{\sin\left(f\left(x\right)\right)}{f$$

Answer

$$-\frac{\sin\left(f\left(x\right)\right)}{f$$

Answer

$$\frac{\sin^2\left(f\left(x\right)\right)}{f$$

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