Evaluate
\frac{36\times \left(\frac{x}{b}\right)^{2}a}{7}
Differentiate w.r.t. x
\frac{72ax}{7b^{2}}
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\frac{12x^{3}\times 15a^{2}b}{5ab^{3}\times 7x}
Divide \frac{12x^{3}}{5ab^{3}} by \frac{7x}{15a^{2}b} by multiplying \frac{12x^{3}}{5ab^{3}} by the reciprocal of \frac{7x}{15a^{2}b}.
\frac{3\times 12ax^{2}}{7b^{2}}
Cancel out 5abx in both numerator and denominator.
\frac{36ax^{2}}{7b^{2}}
Multiply 3 and 12 to get 36.
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Limits
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