What is structure of the cis and trans isomers of the compound piperonal?

https://en.wikipedia.org/wiki/Piperonal

Answer 1

Piperonal has no cis/trans isomers.

Piperonal is 3,4-methylenedioxybenzaldehyde.

Its structure is

Neither the methylenedioxy group nor the aldehyde group is capable of cis/trans isomerism.

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Answer 2

The cis isomer of piperonal has a cis configuration of the double bond between the oxygen and the carbon atoms. The trans isomer of piperonal has a trans configuration of the double bond between the oxygen and the carbon atoms.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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