Severity: Warning
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Filename: drivers/Session_files_driver.php
Line Number: 176
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /home/answnniz/public_html/system/sessions)
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
6. a. Use an x− interval of 0.0001 to determine the instantaneous range of change of the function f(x)= x4+ 8x3 +19x2+12xatx = −2. Give answer to the nearest tenth. [A3] b. Determine whether the function f(x)= x4+ 8x3 + 19x2+12x at x = − 2 has a maximum or minimum at the point where x = − 2. Justify your answer. [A5] [C2]