Recent questions in Engineering Mathematics

0 votes
1 answer
3242
In the Rosen it is mentioned that P → Q is same as Q unless (negation P).Can someone please explain this...I m not getting the intuition behind this!
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1 answer
3243
The formula for the number of positive integers m which are less than p^k and relatively prime to p^k, where p is a prime number and k is a positive integer is__________-...
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0 answers
3244
I have a query here. For the case 4 when 4 tosses are made shouldn’t the probability be $\frac{1}{8}$ instead of $\frac{1}{16}$ because at 4th toss, it be might be HHHT...
1 votes
0 answers
3245
0 votes
0 answers
3247
0 votes
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3248
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3249
Find the nth derivative of the followingy = x^3 sin 2x
0 votes
1 answer
3251
how many different trees possible with 5 nodes?
1 votes
1 answer
3252
0 votes
2 answers
3253
what is the difference between commutative and symmetric
4 votes
1 answer
3255
X and Y are two independent random variables with variances 1 and 2 respectively. Let Z=X-Y. The variance of Z is _____.
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1 answer
3256
Divide 75 into three parts such that their product is maximum.
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3257
1 votes
1 answer
3258
How many distinct unlabeled graphs are there with 4 vertices and 3 edges?
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3260
f(x)=ln x +xg(x)=x^2 sin(x)h(x)=x^3-xwhich of them are represents the many-to-one function?