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【OG20-P160-95题】
The function f is defined by f(x) =√x – 10 for all positive numbers x. If u = f(t) for some positive numbers t and u, what is t in terms of u?
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题目：已知函数f（x）=-10,其中x为正数，假设u=f(t),并且t和u均为正数，求用u表示t。
解答：由函数方程可知，u=f(t)=-10，转换方程式可得t=(u+10)^2.
如果有时间的话我也能做对
把题目给出的条件 u = f(t) 套用到题目给出的方程式
f(x) = – 10
因u=f(t)=√t-10
u=√t-10
√t=u+10
所以 t=(u+10)²
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2021-07-11 14:42:18
emily666
u=f(t)=√t-10 因此 t=(u+10)2
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2020-03-10 19:37:56
emily666
看不懂啊。。。
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2020-03-10 19:27:40
emily666回复emily666
很简单啊
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2020-04-02 16:12:29
如果有时间的话我也能做对回复 emily666
把题目给出的条件 u = f(t) 套用到题目给出的方程式
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2021-07-11 14:40:34
如果有时间的话我也能做对回复 emily666
f(x) = – 10
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2021-07-11 14:41:07
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