If $\alpha$ and $\beta$ are respectively the order and degree of the differential equation…

If $\alpha$ and $\beta$ are respectively the order and degree of the differential equation $y=e^{\left(\frac{d y}{d x}+\frac{d^2 y}{d x^2}\right)}$, then the value of $\alpha+\alpha^\beta+\alpha^{2 \beta}+\ldots+$ $\alpha^{2023 \beta}=$
  1. $2^{2025}+2$
  2. $2^{2024}+1$
  3. $2^{2024}$
  4. $2^{2024}-1$

Solution

Given differential equation $\begin{aligned} & y=e^{\left(\frac{d y}{d x}+\frac{d^2 y}{d x^2}\right)} \Rightarrow \ln (y)=\frac{d y}{d x}+\frac{d^2 y}{d x^2} \\ & \Rightarrow \text { degree }=1, \text { order }=2 \\ & \Rightarrow \alpha=2, \beta=1 \\ & \text { Now, } \alpha+\alpha^\beta+\alpha^{2 \beta}+\ldots .+\alpha^{2023 \beta} \\ & =2+2^1+2^2+2^3+\ldots+2^{2023} \\ & \quad=2+\frac{2\left(2^{2023}-1\right)}{2-1}=2^{2024} . \end{aligned}$

Asked in: AP EAMCET 2023 (15 May Shift 2)

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