(i) from the question, {(x, y): x is a person, y is the mother of x} So we can say that each person ‘x’ has only one biological mother. Therefore, the above set of ordered pairs make a function. If...
Is
a function? If g is described by
, then what value should be assigned to
and
From the question, \[\mathbf{g}\text{ }=\text{ }\left\{ \left( \mathbf{1},\text{ }\mathbf{1} \right),\text{ }\left( \mathbf{2},\text{ }\mathbf{3} \right),\text{ }\left( \mathbf{3},\text{ }\mathbf{5}...
If
is defined by
, write f (f (x)).
Given, \[\mathbf{f}\text{ }\left( \mathbf{x} \right)\text{ }=\text{ }{{\mathbf{x}}^{\mathbf{2}}}~\text{ }\mathbf{3x}\text{ }+\text{ }\mathbf{2}\] Then, \[\begin{array}{*{35}{l}} f\text{ }\left(...
If A = {a, b, c, d} and the function f = {(a, b), (b, d), (c, a), (d, c)}, write
.
According to the question, A = {a, b, c, d} and f = {(a, b), (b, d), (c, a), (d, c)} So, \[\mathbf{f}{{~}^{\mathbf{1}}}\] = {(b, a), (d, b), (a, c), (c, d)}
. Let f: R → R be the function defined by f (x) =
,
. write
.
According to the question the function, f (x) = \[\mathbf{2x}\text{ }\text{ }\mathbf{3}\], \[\forall \mathbf{x}\in \mathbf{R}\] Let us consider \[y\text{ }=\text{ }2x\text{ }\text{ }3\] \[x\text{...
Let f,
be defined by f(x) =
and g (x) =
,
, respectively. Then, find
.
According to the question, f(x) = \[\mathbf{2x}\text{ }+\text{ }\mathbf{1}\]and g (x) = \[{{\mathbf{x}}^{\mathbf{2}}}~\text{ }\mathbf{2}\], \[\forall \mathbf{x}\in \mathbf{R}\] Thus, \[g\text{...
. Let D be the domain of the real valued function f defined by f(x) =
. Then, write D
According to the question, f(x) = \[\sqrt{(\mathbf{25}\text{ }\text{ }{{\mathbf{x}}^{\mathbf{2}}})}\] The function is defined if \[25\text{ }\text{ }{{x}^{2}}~\ge \text{ }0\] So, \[{{x}^{2}}~\le...
Let A = {a, b, c} and the relation R be defined on A as follows: R = {(a, a), (b, c), (a, b)}. Then, write minimum number of ordered pairs to be added in R to make R reflexive and transitive.
According to the given question the relation, R = {(a, a), (b, c), (a, b)} Therefore, to make R as reflexive we should add (b, b) and (c, c) to R. Also, to make R as transitive we should add (a, c)...
If , show that
Given function is: $y=\left(\tan ^{-1} x\right)^{2}$.....(i) Representing $y_{2}$ as second derivative of the function and $y_{1}$ as first derivative and , we get, $y_{1}=2\left(\tan ^{-1} x\right)...
If and , find .
Solution: The provided expressions are $x=a(\cos t+t \sin t)$and $y=a(\sin t-t \cos t)$ $x=a(\cos t+t \sin t)$ With respect to $t$ differentiating both the sides $\frac{d x}{d t}=a\left(-\sin...
Find the length of a tangent drawn to a circle with radius 5cm, from a point 13 cm from the centre of the circle.
Let consider the centre of the circle is O. Given in the question- OP = radius = $5cm$ OQ = $13cm$ At point P, a tangent if formed such that the line passing through O intersects it at point Q....