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# 값 구하기

값 구하기 및 그 수준 제어, 무한 재귀 방지

### 참고

MuPAD® Notebook은 향후 릴리스에서 제거될 예정입니다. MATLAB® 라이브 스크립트를 대신 사용하십시오.

MuPAD Notebook 파일을 MATLAB 라이브 스크립트 파일로 변환하려면 `convertMuPADNotebook`을 참조하십시오. MATLAB 라이브 스크립트는 일부 차이는 있지만 대부분의 MuPAD 기능을 지원합니다. 자세한 내용은 Convert MuPAD Notebooks to MATLAB Live Scripts 항목을 참조하십시오.

 `block` Create an object protected against evaluation `blockIdents` Create a block with some identifiers protected against evaluation `blockTransparent` Create a transparent block protected against evaluation `unblock` Replace blocks by their contents `context` Evaluate an object in the enclosing context `eval` Evaluate an object `evalassign` Assignment with evaluation of the left hand side `evalAt` Insert a value (evaluate at a point) `evalp` Evaluate a polynomial at a point `freeze` Create an inactive copy of a function `unfreeze` Create an active copy of a frozen function `hold` Delay evaluation `LEVEL` Substitution depth of identifiers `level` Evaluate an object with a specified substitution depth `MAXDEPTH` Prevent infinite recursion during procedure calls `MAXEFFORT` Maximum amount of work to spend on the computation `MAXLEVEL` Prevent infinite recursion during evaluation

## 예제 및 방법

Enforce Evaluation

MuPAD automatically evaluates results returned by most of the system functions.

Prevent Evaluation

When you perform interactive computations in MuPAD, the system tries to evaluate all expressions before returning them.

Evaluate at a Point

To evaluate an expression for particular values of identifiers, use the `evalAt` function or its shortcut `|`.

## 개념

Evaluations in Symbolic Computations

Evaluation is one of the most common mathematical operations.

Level of Evaluation

The value of an identifier can contain arbitrary MuPAD objects, including identifiers.

Actual and Displayed Results of Evaluations

When MuPAD evaluates an expression or executes a command, the output that the system displays can differ from the actual result.

#### Mathematical Modeling with Symbolic Math Toolbox

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