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mezya [45]
3 years ago
10

27.) If a ≠ 0, then lim (x^2 - a^2)/(x^4 - a^4) is: x->-a

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
4 0

Answer:

\frac{1}{2a^2}

Step-by-step explanation:

Step 1: Write limit

\lim_{x \to -a} \frac{x^2-a^2}{x^4-a^4}

Step 2: Factor

\lim_{x \to -a} \frac{(x+a)(x-a)}{(x+a)(x-a)(x^2+a^2)}

Step 3: Simplify

\lim_{x \to -a} \frac{1}{x^2+a^2}

Step 4: Substitute

\frac{1}{(-a)^2+a^2}

Step 5: Evaluate

\frac{1}{a^2+a^2}

Step 6: Simplify

\frac{1}{2a^2}

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