Evaluate
7\sqrt{15}b^{2}
Differentiate w.r.t. b
14\sqrt{15}b
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\sqrt{21}b^{2}\sqrt{35}
Multiply b and b to get b^{2}.
\sqrt{735}b^{2}
To multiply \sqrt{21} and \sqrt{35}, multiply the numbers under the square root.
7\sqrt{15}b^{2}
Factor 735=7^{2}\times 15. Rewrite the square root of the product \sqrt{7^{2}\times 15} as the product of square roots \sqrt{7^{2}}\sqrt{15}. Take the square root of 7^{2}.
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