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Logarithmic Differentiation

If x= 7 / 1...

Question

If $x = \frac{7}{11}$ , and $y = 0. ¯ ¯ ¯ 7$ then $\frac{x^{3} + y^{3}}{x + y} - {(x - y)}^{2}$ is

A

0. ¯ ¯¯¯¯ ¯ 49

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B

0. ¯ ¯¯¯¯ ¯ 59

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C

0. ¯ ¯¯¯¯ ¯ 79

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D

0. ¯ ¯¯¯¯ ¯ 99

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Solution

The correct option is A $0. ¯ ¯¯¯¯ ¯ 49$

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Similar questions

u = x^{3} - 3 x^{2} y + y^{3}

x \frac{\partial^{2} u}{\partial x \partial y} + y \frac{\partial^{2} u}{\partial y^{2}} =

∣ x ∣< 1

∣ y ∣< 1

(x + y) + (x^{2} + x y + y^{2}) + (x^{3} + x^{2} y + x y^{2} + y^{3}) + . . . . . \infty

If x+y=7 and x*y=12 find x³+y³

x + y = 5

x^{2} + y^{2} = 111

, then value of

x^{3} + y^{3}

y = x - \frac{x^{2}}{2} + \frac{x^{3}}{3} - \frac{x^{4}}{4} + . . . \infty

| x | < 1

x = y + \frac{y^{2}}{a!} + \frac{y^{3}}{b!} + \dots \dots + \infty

a^{2} + b

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