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## 2018年09月30日

### 当前版本： Wei hong , 2018年09月30日

#### 标题:

`My calculator shows ERR: INVALID when trying to calculate Y of graph`

#### 文本:

 BasicallyMy calculator is a TI-84 Plus Pocket SE. Basically as the title says, let’s use Y=X graph as an example. If I have my window values of X set to Xmin = -10 and Xmax = 10, and I graph the function Y=X and use the “calc value” function to try to calculate for a x value beyond the X window values (for e.g x=11) I will get an ERR: INVALID. BasicallyMy calculator is a TI-84 Plus Pocket SE. Basically as the title says, let’s use Y=X graph as an example. If I have my window values of X set to Xmin = -10 and Xmax = 10, and I graph the function Y=X and use the “calc value” function to try to calculate for a x value beyond the X window values (for e.g x=11) I will get an ERR: INVALID. Is it impossible to calculate y values for X that is beyond your currently set X window values? Or there is something wrong with my calculator settings and how do I correct it? Thanks alot.

#### 设备:

`TI-84 Plus Silver Edition`

`open`

## 2018年09月30日

### 编辑： Wei hong , 2018年09月30日

#### 标题:

`My calculator shows ERR: INVALID when trying to calculate Y of graph`

#### 文本:

 Basically as the title says, let’s use Y=X graph as an example. If I have my window values of X set to Xmin = -10 and Xmax = 10, and I graph the function Y=X and use the calc value“calc value” function to try to findcalculate for a x value beyond the X window values (for e.g x=11) I will get an ERR: INVALID. Basically as the title says, let’s use Y=X graph as an example. If I have my window values of X set to Xmin = -10 and Xmax = 10, and I graph the function Y=X and use the calc value“calc value” function to try to findcalculate for a x value beyond the X window values (for e.g x=11) I will get an ERR: INVALID. Is it impossible to calculate y values for X that is beyond your currently set X window values? Or there is something wrong with my calculator settings and how do I correct it? Thanks alot.

#### 设备:

`TI-84 Plus Silver Edition`

`open`

## 2018年09月30日

### 原帖由： Wei hong , 2018年09月30日

#### 标题:

`My calculator shows ERR: INVALID when trying to calculate Y of graph`

#### 文本:

```Basically as the title says, let’s use Y=X  graph as an example. If I have my window values of X set to Xmin = -10 and Xmax = 10, and I graph the function Y=X and use the calc value function to try to find a x value beyond the X window values (for e.g x=11) I will get an ERR: INVALID.

Is it impossible to calculate y values for X that is beyond your currently set X window values? Or there is something wrong with my calculator settings and how do I correct it? Thanks alot.```

#### 设备:

`TI-84 Plus Silver Edition`

`open`