document.write( "Question 819427: What is the domain of h(x)= 4x^(3/5) - x^(8/5)?
\n" ); document.write( "When i solved for it i got all real numbers, but wolfram said x must be greater or equal to 0. \n" ); document.write( "

Algebra.Com's Answer #493096 by TimothyLamb(4379) $\"\"$ $\"About$

You can put this solution on YOUR website!
f(x) = 4x^(3/5) - x^(8/5)
\n" ); document.write( "f(x) = 4(x^3)^(1/5) - (x^8)^(1/5)
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\n" ); document.write( "the (x^3)^(1/5) term is a radical whose argument can be a negative number, for example if x=-2, then (-2^3)^(1/5) is a complex number
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\n" ); document.write( "if you want f(x) to be a real-valued function, limit your domain to x >= 0
\n" ); document.write( "---
\n" ); document.write( "if you want f(x) to be a complex-valued function, your domain can be all real x
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
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\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "

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