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Beliebt Rechnen >

sum from n=2 to infinity of 1/(n^2+n)

Lösung

n = 2 \sum \infty \frac{1}{n ^{2} + n}

Lösung

\frac{1}{2}

+1

Dezimale

0.5

Schritte zur Lösung

n = 2 \sum \infty \frac{1}{n ^{2} + n}

Teleskopreihen-Test anwenden:

\frac{1}{2}

= \frac{1}{2}

Beliebte Beispiele

derivative of-3e^{1-3x}

\frac{d}{d x} (- 3 e^{1 - 3 x})

derivative of sqrt(2x+4)

\frac{d}{d x} (2 x + 4)

(\partial)/(\partial x)(((-y))/(x^2+y^2))

\frac{\partial}{\partial x} (\frac{( - y )}{x ^{2} + y ^{2}})

y^{^{''}} = a y

y^{'''}-4y^{''}-5y^'=0

y^{^{'''}} - 4 y^{^{''}} - 5 y^{^{'}} = 0