think2times

摘要： Exercise 2.1 Exercise 2.1: Define a better version of make-rat that handles both positive and negative arguments. make-rat should normalize the sign s 阅读全文

摘要： Exercise 1.46 Several of the numerical methods described in this chapter are instances of an extremely general computational strategy known as iterati 阅读全文

摘要： Exercise 1.45 We saw in Section 1.3.3 that attempting to compute square roots by naively finding a fixed point of y->x/y does not converge, and that t 阅读全文

摘要： Exercise 1.44 The idea of smoothing a function is an important concept in signal processing. If f is a function and dx is some small number, then the 阅读全文

摘要： Exercise 1.43 If f is a numerical function and n is a positive integer, then we can form the nth repeated application of f, which is defined to be the 阅读全文

摘要： Exercise 1.42 Let f and g be two one-argument functions. The composition f after g is defined to be the function x->f(g(x)). Define a procedure compos 阅读全文

摘要： Exercise 1.41 Define a procedure double that takes a procedure of one argument as argument and returns a procedure that applies the original procedure 阅读全文

摘要： Exercise 1.40 Define a procedure cubic that can be used together with the newtons-method procedure in expressions of the form (newtons-method (cubic a 阅读全文