limit as x approaches-1 of 2x^2-5x+3

解答

x \to - 1 lim (2 x^{2} - 5 x + 3)

10

求解步骤

x \to - 1 lim (2 x^{2} - 5 x + 3)

代入值

x = - 1

= 2 (- 1)^{2} - 5 (- 1) + 3

化简

2 (- 1)^{2} - 5 (- 1) + 3 : 10

= 10

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