Question

How to use tanh() function to compute the hyperbolic tangent of N radians in PHP

Answer 1

echo "tanh(1) = " . tanh(1) . "<br />";
echo "tanh(-1) = " . tanh(-1) . "<br />"; 
echo "tanh(0.0) = " . tanh(0.0) . "<br />";
echo "tanh(-0.0) = " . tanh(-0.0) . "<br />";
echo "tanh(log(2.0)) = " . tanh(log(2.0)) . "<br />";


 
/*
run:
     
tanh(1) = 0.76159415595576
tanh(-1) = -0.76159415595576
tanh(0.0) = 0
tanh(-0.0) = 0
tanh(log(2.0)) = 0.6
     
*/

 

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