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Continuity of Piecewise Function | Calculus

Question:

Consider f(x)={x2−x−6x+2x≠−2−5x=−2 Check whether the function f(x) is continuous at x=−2.

Answer:

f(−2)=5 limx→−2f(x)=limx→−2x2−x−6x+2 =limx→−2f(x)=limx→−2(x−3)(x+2)x+2 =limx→−2(x−3)=f(−2)=−5 Hence f(x) is continuous at x=−2

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