linear interpolation:
interpolating polynomial function:
![]() ![]() ![]() ![]() |
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shape functions:
N1(![]() |
= | 1 - ![]() |
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N2(![]() |
= | ![]() |
quadratic interpolation:
interpolating polynomial function:
![]() ![]() ![]() ![]() ![]() ![]() |
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shape functions:
N1(![]() |
= | (1 - ![]() ![]() |
|
N2(![]() |
= | - ![]() ![]() |
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N3(![]() |
= | 4![]() ![]() |