Getal & Ruimte (12e editie) - havo wiskunde B

'Differentiëren'.

havo wiskunde B 2.4 Differentiëren

Differentiëren (5)

opgave 1

Differentieer.

2p

a

\(f(x) = 5 x^{2} + 6 x + 2\)

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

a

\(f'(x) = 5 ⋅ 2 ⋅ x^{1} + 6 \text{.}\)

1p

\(f'(x) = 10 x + 6 \text{.}\)

1p

2p

b

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

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

b

\(f'(a) = 2 ⋅ 6 ⋅ a^{5} + 8 ⋅ 2 ⋅ a^{1} - 3 \text{.}\)

1p

\(f'(a) = 12 a^{5} + 16 a - 3 \text{.}\)

1p

2p

c

\(f(p) = \frac{1}{2} p^{7} + 2 p^{5} + 2\frac{1}{4} p^{4} + 1\frac{1}{7}\)

Machtsfunctie (3)
009y - Differentiëren - basis - basis - 1ms - dynamic variables

c

\(f'(p) = \frac{1}{2} ⋅ 7 ⋅ p^{6} + 2 ⋅ 5 ⋅ p^{4} + 2\frac{1}{4} ⋅ 4 ⋅ p^{3} \text{.}\)

1p

\(f'(p) = 3\frac{1}{2} p^{6} + 10 p^{4} + 9 p^{3} \text{.}\)

1p

2p

d

\(f(a) = (3 a^{5} - 6) (a - 2)\)

HaakjesUitwerken (1)
00df - Differentiëren - basis - eind - 0ms - dynamic variables

d

(Haakjes wegwerken)
\(f(a) = (3 a^{5} - 6) (a - 2) = 3 a^{6} - 6 a^{5} - 6 a + 12\)

1p

(Differentiëren)
\(f'(a) = 18 a^{5} - 30 a^{4} - 6 \text{.}\)

1p

opgave 2

Differentieer.

2p

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

HaakjesUitwerken (2)
00dg - Differentiëren - basis - eind - 0ms - dynamic variables

(Haakjes wegwerken)
\(f(x) = (4 x^{3} + 2)^{2} = 16 x^{6} + 16 x^{3} + 4\)

1p

(Differentiëren)
\(f'(x) = 96 x^{5} + 48 x^{2} \text{.}\)

1p

havo wiskunde B 6.2 De afgeleide van machtsfuncties

Differentiëren (6)

opgave 1

Differentieer.

3p

a

\(f(x) = {2 \over 5 x^{7}}\)

NegatieveMacht
00de - Differentiëren - basis - basis - 0ms - dynamic variables

a

(Herleiden)
\(f(x) = {2 \over 5 x^{7}} = \frac{2}{5} x^{-7}\)

1p

(Differentiëren)
\(f'(x) = \frac{2}{5} ⋅ -7 ⋅ x^{-8} = -\frac{14}{5} ⋅ x^{-8}\)

1p

(Herleiden)
\(f'(x) = -\frac{14}{5} ⋅ {1 \over x^{8}} = -{14 \over 5 x^{8}}\)

1p

3p

b

\(f(p) = -9 p ⋅ \sqrt[7]{p^{2}}\)

GebrokenMacht
00dl - Differentiëren - basis - basis - 0ms - dynamic variables

b

(Herleiden)
\(f(p) = -9 p ⋅ \sqrt[7]{p^{2}} = -9 ⋅ p^{1} ⋅ p^{\frac{2}{7}} = -9 ⋅ p^{1\frac{2}{7}}\)

1p

(Differentiëren)
\(f'(p) = -9 ⋅ 1\frac{2}{7} ⋅ p^{\frac{2}{7}}\)

1p

(Herleiden)
\(f'(p) = -11\frac{4}{7} ⋅ p^{0} ⋅ p^{\frac{2}{7}} = -11\frac{4}{7} ⋅ \sqrt[7]{p^{2}}\)

1p

3p

c

\(f(a) = {a^{5} - 5 a \over 4 a^{3}}\)

Uitdelen (1)
00dm - Differentiëren - basis - eind - 0ms - dynamic variables

c

(Uitdelen)
\(f(a) = {a^{5} \over 4 a^{3}} - {5 a \over 4 a^{3}} = \frac{1}{4} a^{2} - \frac{5}{4} a^{-2}\)

1p

(Differentiëren)
\(f'(a) = \frac{1}{4} ⋅ 2 ⋅ a - \frac{5}{4} ⋅ -2 ⋅ a^{-3}\)

1p

(Herleiden)
\(f'(a) = \frac{1}{2} a + {5 \over 2 a^{3}}\)

1p

4p

d

\(f(x) = {2 x^{3} - 1 \over \sqrt[5]{x}}\)

Uitdelen (2)
00dn - Differentiëren - basis - eind - 0ms - dynamic variables

d

(Herleiden)
\(f(x) = {2 x^{3} - 1 \over x^{\frac{1}{5}}}\)

1p

(Uitdelen)
\(f(x) = {2 x^{3} \over x^{\frac{1}{5}}} - {1 \over x^{\frac{1}{5}}} = 2 x^{2\frac{4}{5}} - x^{-\frac{1}{5}}\)

1p

(Differentiëren)
\(f'(x) = 2 ⋅ 2\frac{4}{5} ⋅ x^{1\frac{4}{5}} - 1 ⋅ -\frac{1}{5} ⋅ x^{-1\frac{1}{5}}\)

1p

(Herleiden)
\(f'(x) = 5\frac{3}{5} x ⋅ \sqrt[5]{x^{4}} + {1 \over 5 x ⋅ \sqrt[5]{x}}\)

1p

opgave 2

Differentieer.

3p

a

\(f(a) = {4 \over 3 \sqrt{a}} - 4 \sqrt{a}\)

GebrokenWortel
00do - Differentiëren - basis - eind - 0ms - dynamic variables

a

(Herleiden)
\(f(a) = {4 \over 3 \sqrt{a}} - 4 \sqrt{a} = \frac{4}{3} a^{-\frac{1}{2}} - 4 a^{\frac{1}{2}}\)

1p

(Differentiëren)
\(f'(a) = \frac{4}{3} ⋅ -\frac{1}{2} ⋅ a^{-1\frac{1}{2}} - 4 ⋅ \frac{1}{2} ⋅ a^{-\frac{1}{2}}\)

1p

(Herleiden)
\(f'(a) = -{2 \over 3 a \sqrt{a}} - {2 \over \sqrt{a}}\)

1p

4p

b

\(f(x) = {-4 x - 2 \over x^{3} ⋅ \sqrt{x}}\)

Uitdelen (3)
00dp - Differentiëren - basis - eind - 0ms - dynamic variables

b

(Herleiden)
\(f(x) = {-4 x - 2 \over x^{3\frac{1}{2}}}\)

1p

(Uitdelen)
\(f(x) = {-4 x \over x^{3\frac{1}{2}}} - {2 \over x^{3\frac{1}{2}}} = -4 x^{-2\frac{1}{2}} - 2 x^{-3\frac{1}{2}}\)

1p

(Differentiëren)
\(f'(x) = -4 ⋅ -2\frac{1}{2} ⋅ x^{-3\frac{1}{2}} - 2 ⋅ -3\frac{1}{2} ⋅ x^{-4\frac{1}{2}}\)

1p

(Herleiden)
\(f'(x) = {10 \over x^{3} ⋅ \sqrt{x}} + {7 \over x^{4} ⋅ \sqrt{x}}\)

1p

havo wiskunde B 6.3 De kettingregel

Differentiëren (4)

opgave 1

Differentieer.

2p

a

\(f(x) = 7 (x - 6)^{5}\)

Kettingregel (1)
00dh - Differentiëren - basis - basis - 0ms - dynamic variables

a

(Kettingregel)
\(f'(x) = 7 ⋅ 5 ⋅ (x - 6)^{4} ⋅ 1\)

1p

(Herleiden)
\(f'(x) = 35 (x - 6)^{4} \text{.}\)

1p

3p

b

\(f(p) = -{3 \over (2 p - 4)^{5}}\)

KettingregelMetGebroken
00di - Differentiëren - basis - midden - 1ms - dynamic variables

b

(Herleiden)
\(f(p) = -{3 \over (2 p - 4)^{5}} = -3 ⋅ (2 p - 4)^{-5}\)

1p

(Kettingregel)
\(f'(p) = -3 ⋅ -5 ⋅ (2 p - 4)^{-6} ⋅ 2\)

1p

(Herleiden)
\(f'(p) = 30 ⋅ (2 p - 4)^{-6} = {30 \over (2 p - 4)^{6}}\)

1p

3p

c

\(f(a) = \frac{2}{3} \sqrt{2 a - 5}\)

KettingregelMetWortel
00dj - Differentiëren - basis - midden - 0ms - dynamic variables

c

(Herleiden)
\(f(a) = \frac{2}{3} \sqrt{2 a - 5} = \frac{2}{3} ⋅ (2 a - 5)^{\frac{1}{2}} \text{.}\)

1p

(Kettingregel)
\(f'(a) = \frac{2}{3} ⋅ \frac{1}{2} ⋅ (2 a - 5)^{-\frac{1}{2}} ⋅ 2\)

1p

(Herleiden)
\(f'(a) = \frac{2}{3} ⋅ (2 a - 5)^{-\frac{1}{2}} = {2 \over 3 \sqrt{2 a - 5}}\)

1p

3p

d

\(f(a) = {8 \over 7 \sqrt{4 a + 1}}\)

KettingregelMetGebrokenWortel
00dk - Differentiëren - basis - eind - 1ms - dynamic variables

d

(Herleiden)
\(f(a) = {8 \over 7 \sqrt{4 a + 1}} = \frac{8}{7} ⋅ (4 a + 1)^{-\frac{1}{2}}\)

1p

(Kettingregel)
\(f'(a) = \frac{8}{7} ⋅ -\frac{1}{2} ⋅ (4 a + 1)^{-1\frac{1}{2}} ⋅ 4\)

1p

(Herleiden)
\(f'(a) = -\frac{16}{7} ⋅ (4 a + 1)^{-1\frac{1}{2}} = -{16 \over 7 (4 a + 1) \sqrt{4 a + 1}}\)

1p

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