Constructing a second solution from a known solution
𝑥^2 𝑦^′′−3𝑥𝑦^′+4𝑦=0 , solution 𝑦_1 (𝑥)=𝑥^2
𝑦^′′−4𝑦^′+4𝑦=0 , solution 𝑦_1 (𝑥)=𝑒^2𝑥
𝑦^′′+16𝑦=0 , solution 𝑦_1 (𝑥)=cos4𝑥
Негізгі бет solving diffrential 𝑥^2 𝑦^′′−3𝑥𝑦^′+4𝑦=0 , solution 𝑦_1 (𝑥)=𝑥^2 form 2nd solution fom known solution
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