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If x^(xsqrt(x))=(xsqrt(x))^(x), then x i...

If `x^(xsqrt(x))=(xsqrt(x))^(x)`, then x is equal to:

A

`3/2`

B

`2/9`

C

`9/4`

D

`4/9`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equation \( x^{x\sqrt{x}} = (x\sqrt{x})^{x} \), we can follow these steps: ### Step 1: Rewrite the Right-Hand Side (RHS) The RHS is \( (x\sqrt{x})^{x} \). We can rewrite \( \sqrt{x} \) as \( x^{1/2} \). Therefore, we have: \[ x\sqrt{x} = x \cdot x^{1/2} = x^{1 + 1/2} = x^{3/2} \] So, the RHS becomes: \[ (x\sqrt{x})^{x} = (x^{3/2})^{x} \] ### Step 2: Apply the Power of a Power Rule Using the property of exponents \( (a^m)^n = a^{m \cdot n} \), we can simplify the RHS: \[ (x^{3/2})^{x} = x^{(3/2) \cdot x} = x^{(3x/2)} \] ### Step 3: Set the Left-Hand Side (LHS) Equal to the RHS Now, we can set the LHS equal to the RHS: \[ x^{x\sqrt{x}} = x^{(3x/2)} \] ### Step 4: Equate the Exponents Since the bases are the same (both are \( x \)), we can equate the exponents: \[ x\sqrt{x} = \frac{3x}{2} \] ### Step 5: Simplify the Equation We can divide both sides by \( x \) (assuming \( x \neq 0 \)): \[ \sqrt{x} = \frac{3}{2} \] ### Step 6: Square Both Sides To eliminate the square root, we square both sides: \[ (\sqrt{x})^2 = \left(\frac{3}{2}\right)^2 \] This simplifies to: \[ x = \frac{9}{4} \] ### Conclusion Thus, the value of \( x \) is: \[ \boxed{\frac{9}{4}} \] ---
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S CHAND IIT JEE FOUNDATION-EXPONENTS -QUESTION BANK
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  5. If 64^(a) =1/(256)^(b), then 3a + 4b equals

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  6. If a=b^(2/3) and b =c^(2), what is the value of a in terms of c?

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  10. If 2^(x) - 2^(x-1)=4, then what is the value of 2^(x) + 2^(x-1) ?

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  11. If x=y^(z), y = z^(x) and z=x^(y), then

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  12. Prove that: 1/(1+x^(b-a)+\ x^(c-a))+1/(1+x^(a-b)+\ x^(c-b))+1/(1+x^(b-...

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  13. Find the value of x if [3^(2x-2) +10] // 13=7

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  14. Prove that: (2^(1/2)\ x\ 3^(1/3)\ x\ 4^(1/4))/(10^(-1/5)\ x\ 5^(3/5))\...

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  20. Find the value of (2^(1//4)- 1) (2^(3//4) + 2^(1//2) +2^(1//4) + 1)

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