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發問:
about Variations Given that y varies directly as x 4 次 , find the percentage change in y when x increases by 10%. Answer : 46.41%
最佳解答:
let y = kx^4,where k is constant at beginning, y[0] = k(x[0])^4 now, y[1] = k{(1 + 10%)x[0]}^4 y[1] = 1.4641k．x[0] the percentage change: {(y[1] - y[0])/y[0]} x 100% = (1.4641 - 1) x 100% = 46.41%
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MATHS .......... help!發問:
about Variations Given that y varies directly as x 4 次 , find the percentage change in y when x increases by 10%. Answer : 46.41%
最佳解答:
let y = kx^4,where k is constant at beginning, y[0] = k(x[0])^4 now, y[1] = k{(1 + 10%)x[0]}^4 y[1] = 1.4641k．x[0] the percentage change: {(y[1] - y[0])/y[0]} x 100% = (1.4641 - 1) x 100% = 46.41%
其他解答:
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