मराठी

If ab=cd=ef, prove that each ratio is [2a3+5c3+7e32b3+5d3+7f3]13

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प्रश्न

If `a/b = c/d = e/f`, prove that each ratio is `[(2a^3 + 5c^3 + 7e^3)/(2b^3 + 5d^3 + 7f^3)]^(1/3)`

बेरीज
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उत्तर

`a/b = c/d = e/f` = k(say)
∴ a = k, c = dk, e = fk
`[(2a^3 + 5c^3 + 7e^3)/(2b^3 + 5d^3 + 7f^3)]^(1/3)`

= `[(2b^3k^3 + 5d^3k^3 + 7f^3k^3)/(2b^3 + 5d^3 + 7f^3)]^(1/3)`

= `k[(2b^3 + 5d^3 + 7f^3)/(2b^3 + 5d^3 + 7f^3)]^(1/3)` = k
Hence proved.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Ratio and Proportion - Chapter Test

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