Apache
/
commons-math
mirror of https://github.com/apache/commons-math.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Use MathJax.

This commit is contained in:
Gilles Sadowski 2022-07-27 15:49:14 +02:00
parent 8e6dee5958
commit 9946ec4e22
1 changed files with 16 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/analysis/interpolation/BicubicInterpolatingFunctionTest.java
View File

@ -174,8 +174,9 @@ public final class BicubicInterpolatingFunctionTest {
/**
* Interpolating a plane.
* <p>
* z = 2 x - 3 y + 5
* \[
* z = 2 x - 3 y + 5
* \]
*/
@Test
public void testPlane() {
@ -232,8 +233,9 @@ public final class BicubicInterpolatingFunctionTest {
/**
* Interpolating a paraboloid.
* <p>
* z = 2 x<sup>2</sup> - 3 y<sup>2</sup> + 4 x y - 5
* \[
* z = 2 x^2 - 3 y^2 + 4 x y - 5
* \]
*/
@Test
public void testParaboloid() {
@ -287,11 +289,12 @@ public final class BicubicInterpolatingFunctionTest {
maxTolerance,
false);
}
/**
* Test for partial derivatives of {@link BicubicFunction}.
* <p>
* f(x, y) = &Sigma;<sub>i</sub>&Sigma;<sub>j</sub> (i+1) (j+2) x<sup>i</sup> y<sup>j</sup>
* \[
* f(x, y) = \Sigma_i \Sigma_j (i+1) (j+2) x^i y^j
* \]
*/
@Test
public void testSplinePartialDerivatives() {
@ -371,11 +374,12 @@ public final class BicubicInterpolatingFunctionTest {
/**
* Test that the partial derivatives computed from a
* {@link BicubicInterpolatingFunction} match the input data.
* <p>
* f(x, y) = 5
* - 3 x + 2 y
* - x y + 2 x<sup>2</sup> - 3 y<sup>2</sup>
* + 4 x<sup>2</sup> y - x y<sup>2</sup> - 3 x<sup>3</sup> + y<sup>3</sup>
* \[
* f(x, y) = 5
* - 3 x + 2 y
* - x y + 2 x^2 - 3 y^2
* + 4 x^2 y - x y^2 - 3 x^3 + y^3
* \]
*/
@Test
public void testMatchingPartialDerivatives() {