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dlinn [17]
3 years ago
11

Write a grammar for a language whose sentences start with an even and non-zero number of x’s, end with an odd number of z’s, and

have a number of y’s in between equal to the total number of x’s and z’s in the sentence. For example, xxyyyyyzzz is a valid sentence.
Engineering
1 answer:
sveta [45]3 years ago
3 0

Answer:

GRAMMAR

S -> AB

A -> xxAyy | xxyy

B -> yyBzz | yz

EXPLANATION

A is for even number of x's followed by that number of y's

B is for odd number of y's followed by that number of z's

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Answer:

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Explanation:

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7nadin3 [17]

Answer: maximum length of the nanowire is 510 nm

Explanation:

 

From the table of 'Thermo physical properties of selected nonmetallic solids at At T = 1500 K

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h/mk = 10⁵ / ( 942809.04 × 30) =  0.00353

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θ/θb = [ cosh m(L - x) + ( h/mk) sinh m (L - x)]   / [cosh mL+  (h/mk) sinh mL]

θ/θb = [ cosh m(L - L) + ( h/mk) sinh m (L - L)]   / [cosh mL+  (h/mk) sinh mL]

θ/θb = [ 1 ]  / [cosh mL+  (h/mk) sinh mL]

so we substitute

0.893 =  [ 1 ]  / [cosh (942809.04 × L) +  (0.00353) sinh (942809.04 × L)]

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