Answers for "Create strong animation curves: HOW?"
http://answers.unity.com/questions/1481797/how-to-create-strong-animation-curvescreate-strong.html
The latest answers for the question "Create strong animation curves: HOW?"Answer by Bunny83
http://answers.unity.com/answers/1481816/view.html
You can't get a 90° tangent in Unity's animation curve as it's based on the tangent angle. Even the interpolation is based on cubic bezier curves you can not specify the control points manually, just the tangent. The actual control points will be calculated from that angle based on a 1/3 interval between the keytrames. If you want to know how they are calculated see my [answer over here][1].
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As i said a completely vertical tangent isn't possible. It will result in an instant jump answer.
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I you could specify the control points manually the curve wouldn't represent a mathematical function anymore as the curve could curve back in time which wouldn't make any sense. Why do you need such a steep increase? You most likely won't even notice that first part as animations are sampled in time intervals.
[1]: https://answers.unity.com/questions/438407/the-algorithm-of-curve-in-shuriken-particle-system.html#answer-438613Sun, 18 Mar 2018 02:51:11 GMTBunny83