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Typo in comment. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1374627 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Luc Maisonobe 2012-08-18 18:08:29 +00:00
parent f3f3fc2595
commit f175f37038
1 changed files with 2 additions and 2 deletions
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4
src/main/java/org/apache/commons/math3/analysis/differentiation/DSCompiler.java
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@ -1152,7 +1152,7 @@ public class DSCompiler {
// the nth order derivative of tan has the form:
// dn(tan(x)/dxn = P_n(tan(x))
// where P_n(t) is a degree n+1 polynomial with same parity as n+1
// P_0(t) = t, P_1(t) = 1 + t^2, P_2(x) = 2 t (1 + t^2) ...
// P_0(t) = t, P_1(t) = 1 + t^2, P_2(t) = 2 t (1 + t^2) ...
// the general recurrence relation for P_n is:
// P_n(x) = (1+t^2) P_(n-1)'(t)
// as per polynomial parity, we can store coefficients of both P_(n-1) and P_n in the same array
@ -1478,7 +1478,7 @@ public class DSCompiler {
// the nth order derivative of tanh has the form:
// dn(tanh(x)/dxn = P_n(tanh(x))
// where P_n(t) is a degree n+1 polynomial with same parity as n+1
// P_0(t) = t, P_1(t) = 1 - t^2, P_2(x) = -2 t (1 - t^2) ...
// P_0(t) = t, P_1(t) = 1 - t^2, P_2(t) = -2 t (1 - t^2) ...
// the general recurrence relation for P_n is:
// P_n(x) = (1-t^2) P_(n-1)'(t)
// as per polynomial parity, we can store coefficients of both P_(n-1) and P_n in the same array