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limx0+(ex2cosh(x)(x+x5)α)\lim_{x \to 0^{+}}\left(\frac{e^{\frac{x}{2}}-\cosh(\sqrt{x})}{(x+\sqrt[5]{x})^{\alpha}}\right)

Full solution

Q. limx0+(ex2cosh(x)(x+x5)α)\lim_{x \to 0^{+}}\left(\frac{e^{\frac{x}{2}}-\cosh(\sqrt{x})}{(x+\sqrt[5]{x})^{\alpha}}\right)
  1. Understand Behavior at x=0x=0: Understand the behavior of the function as xx approaches 00. We need to analyze the behavior of the numerator and the denominator separately as xx approaches 00 from the positive side. The numerator involves the exponential function e(x/2)e^{(x/2)} and the hyperbolic cosine function cosh(x)\cosh(\sqrt{x}), both of which approach 11 as xx approaches 00. The denominator involves xx raised to the power of xx11 and the fifth root of xx, both of which approach 00 as xx approaches 00. However, without knowing the value of xx11, we cannot determine the behavior of the denominator. We need more information about xx11 to proceed.
  2. Apply L'Hôpital's Rule: Apply L'Hôpital's Rule if the limit is in an indeterminate form.\newlineSince we have a limit of the form 0/00/0 or /\infty/\infty as xx approaches 00, we can apply L'Hôpital's Rule. This rule states that if the limit of f(x)/g(x)f(x)/g(x) as xx approaches a value cc is in an indeterminate form, then the limit is equal to the limit of f(x)/g(x)f'(x)/g'(x) as xx approaches cc, provided that this latter limit exists. We will differentiate the numerator and the denominator with respect to xx.
  3. Differentiate Numerator: Differentiate the numerator ex/2cosh(x)e^{x/2} - \cosh(\sqrt{x}) with respect to xx. The derivative of ex/2e^{x/2} with respect to xx is (1/2)ex/2(1/2)e^{x/2}. The derivative of cosh(x)\cosh(\sqrt{x}) with respect to xx is (1/2)(1/x)sinh(x)(1/2)(1/\sqrt{x})\sinh(\sqrt{x}) using the chain rule. Therefore, the derivative of the numerator is: ddx[ex/2cosh(x)]=(1/2)ex/2(1/2)(1/x)sinh(x)\frac{d}{dx} [e^{x/2} - \cosh(\sqrt{x})] = (1/2)e^{x/2} - (1/2)(1/\sqrt{x})\sinh(\sqrt{x})
  4. Differentiate Denominator: Differentiate the denominator (x+x5)α(x + \sqrt[5]{x})^\alpha with respect to xx. The differentiation of the denominator depends on the value of α\alpha. Since we do not have the value of α\alpha, we cannot proceed with the differentiation. Without this information, we cannot apply L'Hôpital's Rule, and thus we cannot find the limit.
  5. Need Additional Information: Recognize the need for additional information.\newlineTo solve this problem, we need the value of α\alpha. Without it, we cannot determine the limit. The problem is incomplete as stated, and we cannot provide a final answer.

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