# How to show -(P -> -Q) ⊢ P&Q?

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## Can P be negative P series?

Notice that when the value for p is negative and you rewrite each term using the rules for exponents, it becomes clearer that the terms of the sequence are increasing in value, which causes the series to diverge. This will always happen if you let p < 0, so when looking at p-series, you only use p > 0.

## What is the P rule?

Any p-series with terms larger than the terms of the harmonic series diverges, and any p-series with terms smaller than the terms of the harmonic series converges.\nThe p-series for p = 2 is another common one:\n\nThe p-series rule tells you that this series converges.

## Is P → Q → [( P → Q → QA tautology?

Look at the following two compound propositions: p → q and q ∨ ¬p. (p → q) and (q ∨ ¬p) are logically equivalent. So (p → q) ↔ (q ∨ ¬p) is a tautology. Thus: (p → q)≡ (q ∨ ¬p).

## How do you prove P series?

But to figure out when these series converge well the result is very simple ap series will converge if and only if P is strictly greater than 1. And that's it so let's prove this result.

## What does (- 1 N N converge to?

(−1)n+1 n converges conditionally. 1 n diverges and the alternating harmonic series converges. 1 2n converges.

## What is P test in maths?

The p-series is a power series of the form or , where p is a positive real number and k is a positive integer. The p-series test determines the nature of convergence of a p-series as follows: The p-series converges if and diverges if . See more Calculus topics. Videos related to Calculus.

## What does P → q mean?

p → q (p implies q) (if p then q) is the proposition that is false when p is true and q is false and true otherwise. Equivalent to —not p or q“ Ex. If I am elected then I will lower the taxes.

## Which of the following propositions is tautology Pvq → Qpv q → P PV P → q Both B & C?

The correct answer is option (d.) Both (b) & (c). Explanation: (p v q)→q and p v (p→q) propositions is tautology.

## What does P ∧ q mean?

P ∧ Q means P and Q. P ∨ Q means P or Q. An argument is valid if the following conditional holds: If all the premises are true, the conclusion must be true. Some valid argument forms: (1) 1.

## Does (- 1 n converge conditionally?

(−1)n lnn converges conditionally, by the Comparison and Alternating Series Tests. 5.

## Is the sequence (- 1 N divergent?

Negative 1 to the N diverges.

## Is the sum of (- 1 N convergent?

As n goes to infinity of the nth term or what's the limit of 1 over N as n goes to infinity.

## How do we calculate p-value?

The p-value is calculated using the sampling distribution of the test statistic under the null hypothesis, the sample data, and the type of test being done (lower-tailed test, upper-tailed test, or two-sided test). The p-value for: a lower-tailed test is specified by: p-value = P(TS ts | H 0 is true) = cdf(ts)

## What is p-value example?

P values are expressed as decimals although it may be easier to understand what they are if you convert them to a percentage. For example, a p value of 0.0254 is 2.54%. This means there is a 2.54% chance your results could be random (i.e. happened by chance).

## What p-value means?

probability value

A p-value, or probability value, is a number describing how likely it is that your data would have occurred under the null hypothesis of your statistical test.

## Is 0.006 statistically significant?

A statistically significant difference is not necessarily one that is of clinical significance. In the above example, the statistically significant effect (p = 0.006) is also clinically significant as even a modest improvement in survival is important.

## What does p-value of 0.6 mean?

‘P=0.06’ and ‘P=0.6’ can both get reported as ‘P=NS’, but 0.06 is only just above the conventional cut-off of 0.05 and indicates that there is some evidence for an effect, albeit rather weak evidence. A P value equal to 0.6, which is ten times bigger, indicates that there is very little evidence indeed.

## Is p 0.1 statistically significant?

If the p-value is under . 01, results are considered statistically significant and if it’s below . 005 they are considered highly statistically significant.

## What does p .0001 mean?

The p-value indicates how probable the results are due to chance. p=0.05 means that there is a 5% probability that the results are due to random chance. p=0.001 means that the chances are only 1 in a thousand.

## What does p-value of 0.08 mean?

non-significance

A p-value of 0.08 being more than the benchmark of 0.05 indicates non-significance of the test. This means that the null hypothesis cannot be rejected.