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location United Kingdom
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visits member for 2 years, 10 months
seen 14 hours ago

Peter Phipps


Jul
6
reviewed Reviewed Total number of possible sub sequence with given condition
Jul
2
awarded  Curious
Jun
26
reviewed Reviewed Local geodesics in uniquely geodesic spaces
Jun
23
reviewed Reviewed is $\mathbb{R}^2\setminus \{(0,0)\}$ homeomorphic to $S^1$?
Jun
21
reviewed Reviewed Matlab Optimization problem with Matrices
Jun
21
awarded  Convention
Jun
19
reviewed No Action Needed How to solve this equation in general $ax^3+bx^2+cx+d=0 ?$
Jun
17
revised Filling out tables of incomplete functions
Added image to the post
Jun
17
suggested suggested edit on Filling out tables of incomplete functions
Jun
11
reviewed Reviewed Disjoint conic sections?
Jun
9
comment decimal places essential skills maths
@chris, no, the answer is $69$ cents, not $69$ Euros.
Jun
9
reviewed Reviewed The set of complex numbers of modulus $1$ is a group under multiplication
Jun
4
comment Finding Positive Odd Integers
A computer search shows that the first occurance is $m=205 = 5 \cdot 41$. So $m+4 \cdot 41 = 369 = 3^2 \cdot 41$ and $m^2+(4 \cdot 41)^2 = 68921 = 41^3$.
Jun
3
comment How to solve this sequence $165,195,255,285,345,x$
@user31782 If this answer is very very very useful to you, you should accept it.
Jun
3
answered Find a formula for a function which must increase with $0.5$ at every step$=40$.
Jun
3
reviewed Reviewed Solving programmatically a least squares problem with one constrain
May
28
reviewed Reviewed Solving the inequality. ${3x + 5 \over x} \gt 0$
May
26
comment Name for numbers with a single non-zero digit.
A unit multiple of a power of the base?
May
26
comment Calculate third point with two given point.
@Sami, The values of $x_0$, $y_0$, $x_1$ and $y_1$ are known so my equation is really just in terms of $x$ and $y$. Choose a value for $x$, plug it in the equation and you will get the corresponding value of $y$. Alternatively, you can plug in a value of $y$ and find the corresponding $x$.
May
25
reviewed Reviewed Total function vs Partial function