Let $f ( x ) = \left\{ \begin{array} { c c } x ^ { 2 } + 5 x & x < - 1 \\0 & x = - 1 \\x - 3 & x > - 1\end{array} \right.$ Then ƒ is continuous at -1 if ƒ(-1) is redefined as

Question

Let $f ( x ) = \left\{ \begin{array} { c c } 
x ^ { 2 } + 5 x & x < - 1 \
0 & x = - 1 \
x - 3 & x > - 1
\end{array} \right.$ Then ƒ is continuous at -1 if ƒ(-1) is redefined as

A)-5
B)-4
C)-3
D)-2
E)-1

Quizplus · Accepted Answer

The Answer of Let $f ( x ) = \left\{ \begin{array} { c c } 
x ^ { 2 } + 5 x & x < - 1 \
0 & x = - 1 \
x - 3 & x > - 1
\end{array} \right.$ Then ƒ is continuous at -1 if ƒ(-1) is redefined as

A)-5
B)-4
C)-3
D)-2
E)-1

Let f(x)={x2+5xx<−10x=−1x−3x>−1f ( x ) = \left\{ \begin{array} { c c } x ^ { 2 } + 5 x & x < - 1 \\0 & x = - 1 \\x - 3 & x > - 1\end{array} \right.f(x)=⎩⎨⎧​x2+5x0x−3​x<−1x=−1x>−1​

Let $f ( x ) = \left\{ \begin{array} { c c } x ^ { 2 } + 5 x & x < - 1 \\0 & x = - 1 \\x - 3 & x > - 1\end{array} \right.$