Potenser og logaritmer Flashcards

1a, n-te røtter og potenser

1
Q

potenser

hva er a^n * a^m?

eks oppgave:

2^4 * 2^2

A

a^n+m

eks svar:

2^4+2
2^6

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2
Q

potenser

hva er (a^n) / (a^m)

eks oppgave:

(3^2) / (3^1)

A

a^n-m

eks svar:

3^2-1
3^1
3

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3
Q

potenser

hva er (a*b)^n

eks oppgave:

(4*2)^3

A

a^n * b^n

eks oppgave:

4^3 * 2^3

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4
Q

potenser

hva er (a^n)^m

eks oppgave:

(5^2)^3

A

a^(n*m)

eks svar:

5^(2*3)
5^6

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5
Q

potenser

hva er a^0

eks oppgave:

2^0

A

1

eks svar:

1

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6
Q

potenser

hva er a^-n

eks oppgave:

3^-2

A

1 / a^n

eksempel svar:

1/(3^2)

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7
Q

n-terøtter

√a * √a

(kvadratroten)
eks oppgave:

√3 * √3

A

a

eks svar:

3

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8
Q

n-terøtter

skriv om “√a” til potens

eks spørsmål:

(3 grads kvadratrot) √3

A

a^(1/n)

n representerer hvilken grad kvadratroten er i
eks svar:

3^1/3

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9
Q

potens

hva er (a^1/n)* (b^1/n)

eks oppgave:

(2^1/2)*(1^1/2)

A

(a*b)^1/n

eks svar:

(2*1)^1/2

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10
Q

oppgave:

√x * x^2/3 * x^-1/6

regn ut

A

=x^1/2 * x^2/3 * x^-1/6
=x^(1/2+2/3-1/6)
=x^(3/6+4/6-1/6)
= x

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11
Q

oppgave:

3 grads √4x * 3 grads √16x^2

regn ut

A

=3 grads √4x*16x^2
=3 grads √64x^3
=3 grads √64 * 3 grads √x^3
=4x

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