常用数学函数_PHP

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print(abs(-13));//打印绝对值
?>

// 从 -1 到1打印acos函数的值
print("\n");
print("\n");
for($index = -1; $index {
print("\n");
print("\n");
print("\n");
print("\n");
}
print("

x	acos(x)
$index	" . acos($index) . "

\n");
?>

// 从 -1 到 1打印asin函数的值
print("\n");
print("\n");
for($index = -1; $index {
print("\n");
print("\n");
print("\n");
print("\n");
}
print("

x	asin(x)
$index	" . asin($index) . "

\n");
?>

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