A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: models/Site_model.php

Line Number: 233

Backtrace:

File: /var/www/html/KOL/voice/application/models/Site_model.php
Line: 233
Function: _error_handler

File: /var/www/html/KOL/voice/application/controllers/Exitpage.php
Line: 109
Function: get_keyword_cat

File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: models/Site_model.php

Line Number: 233

Backtrace:

File: /var/www/html/KOL/voice/application/models/Site_model.php
Line: 233
Function: _error_handler

File: /var/www/html/KOL/voice/application/controllers/Exitpage.php
Line: 110
Function: get_keyword_cat

File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once

疑難雜症萬事通 - lim計算 - 前往 https://ocw.nthu.edu.tw/ocw/upload/7/news/L07_極限的四則運算 極限的多項式.pdf
疑難雜症萬事通
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並前往 https://ocw.nthu.edu.tw/ocw/upload/7/news/L07_%E6%A5%B5%E9%99%90%E7%9A%84%E5%9B%9B%E5%89%87%E9%81%8B%E7%AE%97%20%E6%A5%B5%E9%99%90%E7%9A%84%E5%A4%9A%E9%A0%85%E5%BC%8F.pdf

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