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hetalang · Feb 9, 2024 · 78ac02d · 78ac02d
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diff --git a/README.md b/README.md
@@ -6,7 +6,7 @@
 
 **Heta** is a modeling language for quantitative systems pharmacology and systems biology.
 
-The current version is **0.4.4**.
+The current version is **0.4.5**.
 
 See also the [Heta video tutorial](https://hetalang.github.io/#/resources/?id=lesson-0-introduction)
 

diff --git a/changelog.md b/changelog.md
@@ -1,5 +1,12 @@
 # Change Log
 
+## 0.4.5
+
+- use `0`, `1` together with `true`, `false` for boolean
+- `#deleteNS` action
+- use of `;` everywhere
+- update function list: log(x, b) -> logbase(x, b), remove nthRoot(x), hyperbolic functions support
+
 ## 0.4.4
 
 - use `ProcessExpr` of type: A>B

diff --git a/math.md b/math.md
@@ -68,7 +68,6 @@ Here the first operand `b1 < b2` is the boolean expression, then an expression t
 | pow(x, y)	| The power of x to y, x ^ y. |
 | sign(x) | Compute the sign of a value. |
 | sqrt(x) | Calculate the square root of a value. |
-| nthRoot(x) | 2d root of x |
 | nthRoot(x, n) | n-th root of x |
 | square(x)| Compute the square of a value, x * x. |
 | subtract(x, y) | Subtract two values, x - y. |