# How do you find the axis of symmetry, and the maximum or minimum value of the function #y = 4x^2 + 5x – 1#?

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To find the axis of symmetry of a quadratic function (y = ax^2 + bx + c), use the formula (x = \frac{-b}{2a}). For (y = 4x^2 + 5x - 1), the axis of symmetry is (x = \frac{-5}{2(4)} = -\frac{5}{8}). To find the maximum or minimum value, plug the value of (x) from the axis of symmetry into the function to get the corresponding (y) value. For this function, the maximum or minimum occurs at (x = -\frac{5}{8}). Plug (x = -\frac{5}{8}) into the function to find (y). So, the maximum or minimum value is the (y) value at (x = -\frac{5}{8}).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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