ফাংশন ও ফাংশনের লেখচিত্র
f(x)=2e2x হলে f(ln2x) এর মান কত?
4x
3x2
8x
8x2
Sol n:f(ln2x)=2e2ln2x=2eln(2x)2 ^{n}: \mathrm{f}(\ln 2 x)=2 e^{2 \ln 2 x}=2 e^{\ln (2 x)^{2}} n:f(ln2x)=2e2ln2x=2eln(2x)2 =2eln(4x2)=2×4x2=8x2∴ =2 \mathrm{e}^{\ln \left(4 \mathrm{x}^{2}\right)}=2 \times 4 \mathrm{x}^{2}=8 \mathrm{x}^{2} \therefore =2eln(4x2)=2×4x2=8x2∴
If AAA and BBB have nnn elements in common, then the number of elements common to A×BA\times BA×B and B×AB\times AB×A is
Let f(x)=2−∣x−3∣,1≤x≤5f(x)=2-|x-3|, 1 \le x \le 5f(x)=2−∣x−3∣,1≤x≤5 and for rest of the values f(x)f(x)f(x) can be obtained by using the relation f(5x)=α f(x)∀ x∈Rf(5x)=\alpha\, f(x)\forall\, x \in Rf(5x)=αf(x)∀x∈R.The value of f(2007)f(2007)f(2007) taking α=5\alpha = 5α=5, is:
f(x)=log(x2-4) এর ডোমেন নিচের কোনটি?
f(x)=3x ফাংশনটির-
নিচের কোনটি সঠিক?
