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Beliebt Rechnen >

limit as x approaches-7 of (x^2-9)/(7-x)

Lösung

x \to - 7 lim (\frac{x ^{2} - 9}{7 - x})

Lösung

\frac{20}{7}

+1

Dezimale

2.85714 \dots

Schritte zur Lösung

x \to - 7 lim (\frac{x ^{2} - 9}{7 - x})

Setze den Wert

x = - 7

ein

= \frac{( - 7 ) ^{2} - 9}{7 - ( - 7 )}

Vereinfache

\frac{( - 7 ) ^{2} - 9}{7 - ( - 7 )} : \frac{20}{7}

= \frac{20}{7}

Graph

Beliebte Beispiele

integral of 1/(xsqrt(4x^2-1))

\int \frac{1}{x 4 x ^{2} - 1} d x

limit as x approaches 1+of arctan(ln(x-1))

x \to 1 + lim (arctan (ln (x - 1)))

derivative sqrt(w)e^{7w}

d er i v a t i v e w e^{7 w}

derivative f(x)=x^{-15}

d er i v a t i v e f (x) = x^{- 15}

y^'+1/(200+3t)y=12

y^{^{'}} + \frac{1}{200 + 3 t} y = 12