How to scale leaflets along a stem with geonodes?

How can i array like this in geo node.

One way to do it it to use index to set scale,

And here with a float curve to shape.

Hope that helps.

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Alternetive way also: if you want to mirror more than 1 side “dublicate elements” is useful.

edit: dublicating instance better than dublicating spline

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Thankyou friends.