GNU Emacs Calc 2.02 Manual

3.7: Answers to Exercises

This section includes answers to all the exercises in the Calc tutorial.

• RPN Answer 1 1 RET 2 RET 3 RET 4 + * -
• RPN Answer 2 2*4 + 7*9.5 + 5/4
• RPN Answer 3 Operating on levels 2 and 3
• RPN Answer 4 Joe's complex problems
• Algebraic Answer 1 Simulating Q command
• Algebraic Answer 2 Joe's algebraic woes
• Algebraic Answer 3 1 / 0
• Modes Answer 1 3#0.1 = 3#0.0222222?
• Modes Answer 2 16#f.e8fe15
• Modes Answer 3 Joe's rounding bug
• Modes Answer 4 Why floating point?
• Arithmetic Answer 1 Why the \ command?
• Arithmetic Answer 2 Tripping up the B command
• Vector Answer 1 Normalizing a vector
• Vector Answer 2 Average position
• Matrix Answer 1 Row and column sums
• Matrix Answer 2 Symbolic system of equations
• Matrix Answer 3 Over-determined system
• List Answer 1 Powers of two
• List Answer 2 Least-squares fit with matrices
• List Answer 3 Geometric mean
• List Answer 4 Divisor function
• List Answer 5 Duplicate factors
• List Answer 6 Triangular list
• List Answer 7 Another triangular list
• List Answer 8 Maximum of Bessel function
• List Answer 9 Integers the hard way
• List Answer 10 All elements equal
• List Answer 11 Estimating pi with darts
• List Answer 12 Estimating pi with matchsticks
• List Answer 13 Hash codes
• List Answer 14 Random walk
• Types Answer 1 Square root of pi times rational
• Types Answer 2 Infinities
• Types Answer 3 What can "nan" be?
• Types Answer 4 Abbey Road
• Types Answer 5 Friday the 13th
• Types Answer 6 Leap years
• Types Answer 7 Erroneous donut
• Types Answer 8 Dividing intervals
• Types Answer 9 Squaring intervals
• Types Answer 10 Fermat's primality test
• Types Answer 11 pi * 10^7 seconds
• Types Answer 12 Abbey Road on CD
• Types Answer 13 Not quite pi * 10^7 seconds
• Types Answer 14 Supercomputers and c
• Types Answer 15 Sam the Slug
• Algebra Answer 1 Squares and square roots
• Algebra Answer 2 Building polynomial from roots
• Algebra Answer 3 Integral of x sin(pi x)
• Algebra Answer 4 Simpson's rule
• Rewrites Answer 1 Multiplying by conjugate
• Rewrites Answer 2 Alternative fib rule
• Rewrites Answer 3 Rewriting opt(a) + opt(b) x
• Rewrites Answer 4 Sequence of integers
• Rewrites Answer 5 Number of terms in sum
• Rewrites Answer 6 Defining 0^0 = 1
• Rewrites Answer 7 Truncated Taylor series
• Programming Answer 1 Fresnel's C(x)
• Programming Answer 2 Negate third stack element
• Programming Answer 3 Compute sin(x) / x, etc.
• Programming Answer 4 Average value of a list
• Programming Answer 5 Continued fraction phi
• Programming Answer 6 Matrix Fibonacci numbers
• Programming Answer 7 Harmonic number greater than 4
• Programming Answer 8 Newton's method
• Programming Answer 9 Digamma function
• Programming Answer 10 Unpacking a polynomial
• Programming Answer 11 Recursive Stirling numbers
• Programming Answer 12 Stirling numbers with rewrites