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Hey all,

I don't understand what makes a differential equation (DE) linear.

I found this: "

but then also this: "

t^2 also isn't a constant.

So why is this equation linear?

I don't understand what makes a differential equation (DE) linear.

I found this: "

*x**y*' = 1 is non-linear because*y*' is not multiplied by a constant"but then also this: "

*x*' + (*t^*2)*x*= 0 is linear in*x".*

t^2 also isn't a constant.

So why is this equation linear?

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