Getal & Ruimte (13e editie) - vwo wiskunde B

'Differentiëren'.

vwo wiskunde B 2.3 Limiet en afgeleide

Differentiëren (5)

opgave 1

Differentieer.

2p

a

\(f(p) = 3 p^{3} + 4 p + 7\)

Machtsfunctie (1)
009w - Differentiëren - basis - basis - 1ms - dynamic variables

a

\(f'(p) = 3 ⋅ 3 ⋅ p^{2} + 4 \text{.}\)

1p

\(f'(p) = 9 p^{2} + 4 \text{.}\)

1p

2p

b

\(f(a) = -8 a^{7} - 6 a^{3} - 3 a^{2}\)

Machtsfunctie (2)
009x - Differentiëren - basis - basis - 4ms - dynamic variables

b

\(f'(a) = -8 ⋅ 7 ⋅ a^{6} - 6 ⋅ 3 ⋅ a^{2} - 3 ⋅ 2 ⋅ a^{1} \text{.}\)

1p

\(f'(a) = -56 a^{6} - 18 a^{2} - 6 a \text{.}\)

1p

2p

c

\(f(x) = 1\frac{1}{2} x^{8} + 1\frac{1}{4} x^{3} + 1\frac{1}{2} x\)

Machtsfunctie (3)
009y - Differentiëren - basis - basis - 0ms - dynamic variables

c

\(f'(x) = 1\frac{1}{2} ⋅ 8 ⋅ x^{7} + 1\frac{1}{4} ⋅ 3 ⋅ x^{2} + 1\frac{1}{2} \text{.}\)

1p

\(f'(x) = 12 x^{7} + 3\frac{3}{4} x^{2} + 1\frac{1}{2} \text{.}\)

1p

2p

d

\(f(a) = (7 a^{4} + 8) (a - 3)\)

HaakjesUitwerken (1)
00df - Differentiëren - basis - eind - 1ms - dynamic variables

d

(Haakjes wegwerken)
\(f(a) = (7 a^{4} + 8) (a - 3) = 7 a^{5} - 21 a^{4} + 8 a - 24\)

1p

(Differentiëren)
\(f'(a) = 35 a^{4} - 84 a^{3} + 8 \text{.}\)

1p

opgave 2

Differentieer.

2p

\(f(x) = (5 x^{2} - 3)^{2}\)

HaakjesUitwerken (2)
00dg - Differentiëren - basis - eind - 1ms - dynamic variables

(Haakjes wegwerken)
\(f(x) = (5 x^{2} - 3)^{2} = 25 x^{4} - 30 x^{2} + 9\)

1p

(Differentiëren)
\(f'(x) = 100 x^{3} - 60 x \text{.}\)

1p

vwo wiskunde B 2.4 De productregel en de quotiëntregel

Differentiëren (4)

opgave 1

Differentieer met behulp van de productregel.

2p

a

\(f(x) = (-7 x + 8) (-x^{2} + 6 x)\)

Productregel (1)
009z - Differentiëren - basis - basis - 2ms - dynamic variables

a

(Productregel)
\(f'(x) = -7 (-x^{2} + 6 x) + (-7 x + 8) (-2 x + 6) \text{.}\)

2p

2p

b

\(f(p) = (7 p^{2} + 5 p) (8 p^{2} - p - 2)\)

Productregel (2)
00a0 - Differentiëren - basis - basis - 1ms - dynamic variables

b

(Productregel)
\(f'(p) = (14 p + 5) (8 p^{2} - p - 2) + (7 p^{2} + 5 p) (16 p - 1) \text{.}\)

2p

opgave 2

Differentieer.

2p

a

\(f(x) = {9 x + 7 \over 3 x + 2}\)

Quotientregel (1)
00a1 - Differentiëren - basis - eind - 1ms - dynamic variables

a

(Quotiëntregel)
\(f'(x) = {(3 x + 2) ⋅ 9 - (9 x + 7) ⋅ 3 \over (3 x + 2)^{2}} \text{.}\)

1p

\(f'(x) = {(27 x + 18) - (27 x + 21) \over (3 x + 2)^{2}} = {-3 \over (3 x + 2)^{2}} \text{.}\)

1p

2p

b

\(f(a) = {-5 a^{2} \over -6 a + 5}\)

Quotientregel (2)
00a2 - Differentiëren - basis - eind - 1ms - dynamic variables

b

(Quotiëntregel)
\(f'(a) = {(-6 a + 5) ⋅ -10 a - -5 a^{2} ⋅ -6 \over (-6 a + 5)^{2}} \text{.}\)

1p

\(f'(a) = {(60 a^{2} - 50 a) - 30 a^{2} \over (-6 a + 5)^{2}} = {30 a^{2} - 50 a \over (-6 a + 5)^{2}} \text{.}\)

1p

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