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جواب معادله بازگشتی روبه‌رو چیست؟ a_n = 8 a_(n-2) - 16 a_(n-4)
تعداد ریشه‌های معادلهٔ z^2 + 4z + 2z + i Im(z) = 1 کدام است؟
مقدار lim_(t → 0)frac (t+1)^(t+1) - t - 1 ln(t+1) - t کدام است؟
اگر 0 < a_1 < b_1 و برای n ∈ N ، a_(n+1) = √(a_n b_n), b_(n+1) = (a_n + b_n)/2, آنگاه کدام مورد درست است؟
شعاع همگرایی سری ∑_(n=1)^(∞)(1 - 1/n)^(n^2)(2x+1)^n کدام است؟
مقدار ∫_0^(π/2)ln ((4 + 3sin x)/(4 + 3cos x))dx کدام است؟
If you want to excel at what you love and take your skills to the next level, you need to make a to both yourself and your craft.
It is usually difficult to clearly between fact and fiction in her books.
Some people seem to lack a moral , but those who have one are capable of making the right choice when confronted with difficult decisions.
The factual error may be insignificant, but it is surprising in a book put out by a academic publisher.
In a society conditioned for instant , most people want quick results.
One medically-qualified official was that a product could be so beneficial and yet not have its medical benefit matched by commensurate commercial advantages.
Some aspects of zoological gardens always me, because animals are put there expressly for the entertainment of the public.
Cloze Test — choose the best option for blank (8). Online learning has been around for years, but it really took off during the COVID-19 pandemic. Many schools and universities _(8)_ transition to…
Cloze Test — choose the best option for blank (9). Online learning has been around for years, but it really took off during the COVID-19 pandemic. Many schools and universities _(8)_ transition to…
Cloze Test — choose the best option for blank (10). Online learning has been around for years, but it really took off during the COVID-19 pandemic. Many schools and universities _(8)_ transition to…
Passage 1 People rarely notice it, but theoretical concepts can take decades to be assimilated into the mainstream of computing — yet when they are assimilated, they can have a profound practical…
Passage 2 People have been using mechanical devices to aid calculation for thousands of years. The abacus probably existed in Babylonia (present-day Iraq) about 3000 B.C.E. The ancient Greeks…
Passage 3 The period from 1950 to 1970 witnessed significant hardware developments that revolutionized computer design and architecture. Vacuum tubes, which were initially used to represent bits in…
مقدار ∫_0^1 ∫_0^1 x/(x^2+y^2) dx dy کدام است؟
کمترین فاصلهٔ سطح xy + (x+y)z = 3 از صفحهٔ x + y + z = 0 ، کدام است؟
اگر I = ∬_(R^2) dA/((1+x^2+y^2)^k) همگرا باشد، آنگاه کدام عبارت درست است؟
فرض کنید F(x,y,z) = (xe^x + y)i - (y^2 + z)j + (ze^z + 2x)k و C منحنی x^2 + y^2 = 1 ; x + y + z = 1 در جهت مثبت باشد. مقدار ∮_C F· dr ، کدام است؟
شعاع انحنای دایره بوسان منحنی r(t) = sinh(t) i + cosh(t) j در لحظه t = ln 2 ، کدام است؟
کدام نفی گزاره زیر است؟ « تابع f: A → B دوسویی است. »
فرض کنید A_x = t : 0 < t < 1/x و x ∈ I = (0,1] . کدام مورد نادرست است؟
رابطه همارزی ≅ را بین زیرمجموعه‌های N با ضابطه زیر تعریف می‌کنیم: برای A, B ⊆ N ، A ≅ B یعنی مجموعه A Δ B = (A ∪ B) ∖ (A ∩ B) متناهی است. کدام مورد نادرست است؟
فرض کنید f: X → X یک تابع باشد و عمل دوتایی Δ بین زیرمجموعه‌های X با ضابطه زیر تعریف گردد: A Δ B = (A ∪ B) ∖ (A ∩ B). کدام مورد نادرست است؟